The House Ways and Means Committee recently offered a window into what the legislative body is working on when it comes to developing legislation to govern the taxation of digital assets, highlighting six bills and a discussion draft covering a range of topics.
The House Ways and Means Committee recently offered a window into what the legislative body is working on when it comes to developing legislation to govern the taxation of digital assets, highlighting six bills and a discussion draft covering a range of topics.
As part of the development, the committee held a June 9, 2026, hearing to solicit commentary from industry on the bills, during which committee Chairman Jason Smith (R-Mo.) called the “digital asset status quo is untenable. America needs clear tax rules of the road to remain the crypto capital of the world.”
Smith stated that cryptocurrency has “a market capitalization of over $2 trillion. That’s a massive industry by any measure, and nearly all other industries of a similar size enjoy clear tax policies.”
Chairman Smith noted that more and more people own cryptocurrency and “nearly a quarter of cryptocurrency holders earn less than $75,000 and the average crypto holder is nearly as likely to work in construction, manufacturing, or food service as tech or finance.”
The bills and discussion draft include:
- The Applying Existing Tax Anti-Abuse Rules to Digital Assets Act (H.R. 9172)
- The Charitable Deductions for Digital Donations Act (H.R. 9173)
- The Digital Assets Voluntary Disclosure Program Act (H.R. 9174)
- The Tax Clarity for Mining and Staking Act (H.R. 9175)
- The Providing Analogous Rules for Digital Assets Act (H.R. 9176)
- The Less Tax Paperwork for Digital Asset Owners Act (H.R. 9178)
- The End Digital Assets Tax Shelters Act (Discussion Draft)
The proposed legislation address “three key gaps in the current tax regime that make it harder for Americans to fully participate in the digital asset ecosystem,”
First, he said, “common digital transactions like mining and staking do not fit clearly into existing tax law. In other places, the tax code is silent as to the treatment of digital assets. The ambiguity creates an opening for taxpayers to exploit the law and avoid paying taxes in some circumstances and creates unfair tax burdens on others.
Second, Smith stated that “digital assets do not receive the tax benefit nor the protection from anti-abuse rules long granted to traditional financial assets. The imbalance between digital assets and traditional financial assets creates a two-tier system that unintentionally favor certain assets over others.”
Third, “crypto owners face burdensome tax compliance that makes using digital assets in ordinary commerce almost impossible.” Smith noted that “31 percent of crypto owners would like to buy a cup of coffee at the local shop, yet each $5 cup of coffee bought with a digital asset generates two new pieces of tax paperwork,” which adds a significant burden to both the IRS and the taxpayer.
Ranking Member Richard Neal (R-Mass.) had mixed reviews on the bills. He described his initial observation as some of the bills being “quite sensible, providing clear rules of the road for taxpayers looking to comply with the law. Other provisions sought the common sense goal of alleviating burdensome paperwork requirements, especially in situations where it’s highly unlikely that there would be any tax associated with those transactions, and indeed there are provisions that would close loopholes that are specific to the digital asset industry.”
However, Neal also noted that “it appears there are some provisions that deviate substantially from general tax principles, providing a distinct advantage that are beyond some other investments. We want to be careful about putting a thumb on the scale, and as we all know, it’s much easier to put something into the tax code than it is to take it out.”
Lawrence Zlatkin, Coinbase vice president of tax, testified during the hearing that the bills “represent the most comprehensive effort to modernize digital asset taxation that we have seen to date. Most importantly, this legislation recognized a fundamental reality: market structure and tax policy go hand-in-hand.”
In particular, Zlatkin highlighted H.R. 9178, which he testified “is an important step forward towards making stablecoin payments practical while reducing unnecessary reporting noise,” as well as H.R. 9173, which “provides long-needed clarity for mining and staking rewards, helping ensure taxpayers are not forced into tax obligations before they’ve generated liquidity though an actual sale.”
Mike Kaercher, deputy director of the Tax Law Center at New York University, cautioned that as the bills move through the process, “I encourage policymakers to consider three tax policy principles most closely: parity, administrability, and guardrails to prevent abuse. Some of the provisions in these bills would make improvements consistent with these principles.”
Among those, Kaercher testified that for example, “one of the bills would extend anti-abuse regimes, like wash sale rules and constructive sale rules, to digital assets. That’s a good idea. Another example is the de minimis provision on qualifying stablecoins – a targeted approach with guardrails can reduce paperwork and compliance burdens without creating substantial hidden tax subsidies for digital assets, but the rule should remain targeted because a broader de minimis provision risks abuse and would favor investments in digital assets over those in traditional finance.”
On the provision of deferring tax on mining and staking rewards, Kaercher testified that deferral “isn’t just the distortive subsidy, it could also undermine administrability. Deferral increases complexity for taxpayers and makes it harder for the IRS to do its job.”
He also warned about the possibility of government bailouts if guardrails and policy are not correctly developed.
“I think one thing for policymakers to consider on this is that if digital assets become a larger part of retirement accounts and the assets remain highly volatile, or in a worst-case scenario, crash, that would have an enormous impact on households’ retirement savings, and if that were to happen, I think policymakers would have to think about whether to respond with something like a bailout.”
The Treasury Department, Department of Labor, and Department of Health and Human Services finalized regulations implementing the independent dispute resolution (IDR) process established under the No Surprises Act (P.L. 116-260). The regulations provide new disclosure and administration requirements for group health plans and health insurance issuers related to surprise billing protections. Although the final rules are generally effective August 3, 2026, several provisions have delayed applicability dates.
The Treasury Department, Department of Labor, and Department of Health and Human Services finalized regulations implementing the independent dispute resolution (IDR) process established under the No Surprises Act (P.L. 116-260). The regulations provide new disclosure and administration requirements for group health plans and health insurance issuers related to surprise billing protections. Although the final rules are generally effective August 3, 2026, several provisions have delayed applicability dates.
The final rules require plans and issuers to use claim adjustment reason codes (CARCs) and remittance advice remark codes (RARCs), as specified in guidance, when providing any paper or electronic remittance advice to an entity that does not have a contractual relationship with the plan or issuer. These disclosures must be included along with the initial payment or notice of denial of payment for certain items and services subject to the surprise billing protections in the No Surprises Act.
The regulations also make several procedural updates to the federal IDR process. These include refinements to the open negotiation period, the formal initiation of the IDR process, and the dispute eligibility review procedures. Further, the rules address the payment and collection of administrative fees as well as certified IDR entity fees.
The agencies also finalized the definition of bundled payment arrangements, amended requirements related to batched items and services, and amended the rules for extensions of timeframes due to extenuating circumstances. Additionally, the regulation finalizes provisions that require plans and issuers to register in the federal IDR portal.
T.D. 10049
The IRS has published the inflation adjustment factor and reference prices for determining the credit for renewable electricity production for calendar year 2026 sales of kilowatt hours of electricity produced in the U.S. or a U.S. possession from qualified energy resources.
The IRS has published the inflation adjustment factor and reference prices for determining the credit for renewable electricity production for calendar year 2026 sales of kilowatt hours of electricity produced in the U.S. or a U.S. possession from qualified energy resources.
The inflation adjustment factor for qualified energy resources is 2.0570. The reference price for facilities producing electricity from wind is 3.17 cents per kilowatt hour. The reference prices for facilities producing electricity from closed-loop biomass, open-loop biomass, geothermal energy, solar energy, municipal solid waste, qualified hydropower production and marine and hydrokinetic renewable energy have not been determined for calendar year 2026.
Phaseout Limits
For electricity sold during the calendar year 2026, the renewable electricity production credit is not subject to a phaseout under Code Sec. 45(b)(1) for electricity produced from wind. This is because the 2026 reference price for electricity produced from wind, 3.17 cents per kilowatt hour, does not exceed 8 cents multiplied by the inflation adjustment factor (2.0570). The phase-out of the credit also does not apply to electricity sold in 2026 and produced from closed-loop biomass, open-loop biomass, geothermal energy, solar energy, municipal solid waste, qualified hydropower production and marine and hydrokinetic renewable energy.
Credit Amount Adjustments
The credit for renewable electricity production for calendar year 2026 under Code Sec. 45(a) is 3.1 cents per kilowatt hour on the sale of electricity produced from the qualified energy resources of wind, closed-loop biomass and geothermal energy. The credit is 1.5 cents per kilowatt hour on the sale of electricity produced in open-loop biomass facilities, landfill gas facilities, trash facilities, qualified hydropower facilities and marine and hydrokinetic renewable energy facilities.
Notice 2026-37
The IRS updated guidance relating to the energy community provisions in:
- Code Sec. 45 production tax credit for electricity produced from certain resources;
- — the resource-neutral Code Sec. 45Y clean electricity production credit that largely replaces the Code Sec. 45 credit for property placed in service after 2024;
- — the Code Sec. 48 business energy investment credit for investments in property that produces electricity from certain resources; and
- — the resource-neutral Code Sec. 48E clean energy investment credit that largely replaces the Code Sec. 48 credit for property placed in service after 2024.
The IRS updated guidance relating to the energy community provisions in:
- — the Code Sec. 45 production tax credit for electricity produced from certain resources;
- — the resource-neutral Code Sec. 45Y clean electricity production credit that largely replaces the Code Sec. 45 credit for property placed in service after 2024;
- — the Code Sec. 48 business energy investment credit for investments in property that produces electricity from certain resources; and
- — the resource-neutral Code Sec. 48E clean energy investment credit that largely replaces the Code Sec. 48 credit for property placed in service after 2024.
Annual Statistical Area Category and Coal Closure Category Update
Notice 2026-39 publishes information taxpayers may use to determine whether they meet certain requirements under the Statistical Area Category or the Coal Closure Category for purposes of qualifying for energy community bonus credit amounts or rates.
- (1) Appendix 1 lists counties and county-equivalents that qualify as energy communities because they meet the Fossil Fuel Employment threshold and the unemployment rate requirement for calendar year 2025.
- (2) Appendix 2 lists newly identified census tracts with either a coal mine closure or a coal-fired electric generating unit retirement, and census tracts directly adjoining those tracts.
- (3) Appendix 3 lists census tracts that newly qualify as coal closure census tracts because of location-data corrections issued since the publication of Notice 2025-31.
Notice 2026-39
The Treasury Department and the IRS have announced plans to issue proposed regulations under Code Sec. 4960 expanding the definition of a covered employee for purposes of the excise tax on excessive compensation paid by applicable tax-exempt organizations (ATEOs). The guidance follows amendments made by section 70416 of the One, Big, Beautiful Bill Act and applies to taxable years beginning after December 31, 2025.
The Treasury Department and the IRS have announced plans to issue proposed regulations under Code Sec. 4960 expanding the definition of a covered employee for purposes of the excise tax on excessive compensation paid by applicable tax-exempt organizations (ATEOs). The guidance follows amendments made by section 70416 of the One, Big, Beautiful Bill Act and applies to taxable years beginning after December 31, 2025.
Before the legislative change, a covered employee generally was one of an ATEO’s five highest-compensated employees for the tax year at issue or an individual who previously held that status. The amended law broadens the definition to include any employee of an ATEO and certain former employees for taxable years beginning after 2025. However, individuals who were not covered employees under the pre-2026 rules will not become covered employees solely because they worked for an ATEO before 2026.
The forthcoming regulations are expected to eliminate references to the five highest-compensated employees standard and make conforming changes. The agencies intend to retain exceptions similar to the current limited-hours and non-exempt funds exceptions, but discontinue the limited-services exception because its rationale no longer applies. Until proposed regulations are issued, ATEOs may rely on Notice 2026-36. The Treasury Department and the IRS requested comments on the proposed rules by August 4, 2026.
Notice 2026-36
IR 2026-73
The IRS has issued the 2025 Data Book detailing the agency’s activities during fiscal year 2025. The report provided an overview of the agency’s operations to meet statutory responsibilities. The revenue collected by the Service exceeded $5.3 trillion.
The IRS has issued the 2025 Data Book detailing the agency’s activities during fiscal year 2025. The report provided an overview of the agency’s operations to meet statutory responsibilities. The revenue collected by the Service exceeded $5.3 trillion.
“Fiscal Year 2025 was a pivotal year, as we began the process of implementing tax relief for hardworking Americans enacted as part of the Working Families Tax Cuts Act (WFTC),” said IRS CEO Frank J. Bisignano. “The numbers in the Data Book tell the story of an organization that serves as a key partner in the administration’s mission,” he added. The CEO also highlighted efforts to transform the IRS into a digital-first agency. These efforts would reduce paper processing through the “zero paper” initiative.
During the 2026 filing season, around 45 percent of individual tax returns claimed one or more of the new tax benefits from the WFTC. The average refund on a return claiming one of these deductions was over $3,200, as of May 27.
Further, online tools, including the IRS Online Account were upgraded to expand access and add new features. Expanded technology and advanced analytics would allow the Service to identify high-risk areas of non-compliance and tax fraud. Finally, more information can be found here.
IR 2026-74
The IRS announced the release of a new calculator to determine interest rates for large, multi-year construction and manufacturing projects. The calculator is named Percentage-of-Completion Method (PCM) Look-Back Interest Calculator and is MS Excel based. It supports calculations for Form 8697, Interest Computation Under the Look-Back Method for Completed Long-Term Contracts. However, it does not address all fact patterns or complexities associated with look-back interest calculations.
The IRS announced the release of a new calculator to determine interest rates for large, multi-year construction and manufacturing projects. The calculator is named Percentage-of-Completion Method (PCM) Look-Back Interest Calculator and is MS Excel based. It supports calculations for Form 8697, Interest Computation Under the Look-Back Method for Completed Long-Term Contracts. However, it does not address all fact patterns or complexities associated with look-back interest calculations.
“The IRS is focused on improving and enhancing how we serve taxpayers,” said IRS Chief Executive Officer Frank J. Bisignano. “We are transforming the IRS into a digital-first agency that provides the best possible experience for taxpayers, and tools like this calculator are an important step in that effort,” he added.
The look-back interest is determined using a three-step process:
- Hypothetically reallocating income to prior tax year based on actual revenues and costs;
- Computing hypothetical tax overpayments or underpayments of tax; and
- Calculating interest on tax underpayments or overpayments.
Taxpayers and tax practitioners may submit feedback about the calculator, by emailing Stakeholder Liaison and including "Look-Back Interest Workbook Feedback" in the subject line. More information can be found here.
IR 2026-70
In 2013, a new and unique tax will take effect—a 3.8 percent "unearned income Medicare contribution" tax as part of the structure in place to pay for health care reform. The tax will be imposed on the "net investment income" (NII) of individuals, estates, and trusts that exceeds specified thresholds. The tax will generally fall on passive income, but will also apply generally to capital gains from the disposition of property.
In 2013, a new and unique tax will take effect—a 3.8 percent "unearned income Medicare contribution" tax as part of the structure in place to pay for health care reform. The tax will be imposed on the "net investment income" (NII) of individuals, estates, and trusts that exceeds specified thresholds. The tax will generally fall on passive income, but will also apply generally to capital gains from the disposition of property.
Specified thresholds
For an individual, the tax will apply to the lesser of the taxpayer's NII, or the amount of "modified" adjusted gross income (AGI with foreign income added back) above a specified threshold, which is:
- $250,000 for married taxpayers filing jointly and a surviving spouse;
- $125,000 for married taxpayers filing separately;
- $200,000 for single and head of household taxpayers.
Examples. A single taxpayer has modified AGI of $220,000, including NII of $30,000. The tax applies to the lesser of $30,000 or ($220,000 minus $200,000), the specified threshold for single taxpayers. Thus, the tax applies to $20,000.
A single taxpayer has modified AGI of $150,000, including $60,000 of NII. Because the taxpayer's income is below the $200,000 threshold, the taxpayer does not owe the tax, despite having substantial NII.
For an estate or trust, the tax applies to the lesser of undistributed net income, or the excess of AGI over the dollar amount for the highest tax rate bracket for estates and trusts ($11,950 for 2013). Thus, the tax applies to a much lower amount for trusts and estates.
Application of tax
The tax applies to interest, dividends, annuities, royalties, and rents, and capital gains, unless derived from a trade or business. The tax also applies to income and gains from a passive trade or business.
Other items are excluded from NII and from the tax: distributions from IRAs, pensions, 401(k) plans, tax-sheltered annuities, and eligible 457 plans, for example. Items that are totally excluded from gross income, such as distributions from a Roth IRA and interest on tax-exempt bonds, are excluded both from NII and from modified AGI.
The tax does not apply to nonresident aliens, charitable trusts, or corporations.
Tax planning techniques
Taxpayers are concerned about having to pay the tax. One technique for avoiding the tax is to sell off capital gain property in 2012, before the tax applies. This can be particularly useful if the taxpayer is facing a large capital gain from the sale of a principal residence (after taking the $250,000/$500,000 exclusion from income). Older taxpayers who do not want to sell their property may want to consider holding on to appreciated property until death, when the property gets a fair market value basis without being subject to income tax.
The technique of "gain harvesting" may be even more attractive if tax rates increase on dividends, capital gains, and AGI in 2013, with the potential expiration of the Bush-era tax cuts. However, the status of these tax rates will not be determined until after the election, potentially in a lame-duck Congressional session. It is also possible that Congress will simply extend existing tax rates for another year and "punt" the decision until 2013, as tax reform discussions heat up.
Taxpayers may also want to change the source of their income. Investing in tax-exempt bonds will be more attractive, since the interest income does not enter into AGI or NII. Converting a 401(k) account or traditional IRA to a Roth IRA will accomplish the same purpose. Income from a Roth conversion is not net investment income, although the income will increase modified AGI, which may put other income in danger of being subject to the 3.8 percent tax. Increasing deductible or pre-tax contributions to existing retirement plans can also lower income and help the taxpayer stay below the applicable threshold.
Trusts and estates should make a point of distributing their income to their beneficiaries. A trust's NII will be taxed at a low threshold (less than $12,000), while the income received by a beneficiary is taxed only if the much higher $200,000/$250,000 thresholds are exceeded.
Uncertainty
There was some uncertainty about the tax taking effect because of litigation challenging the health care law providing the tax, but a June 2012 Supreme Court decision upheld the law. The application of the tax is also uncertain because the Republican leadership has vowed to pursue repeal of the health care law if the Republicans win the presidency and take control of both houses of Congress in the November 2012 elections. But this is speculative. In the meantime, the Supreme Court decision guarantees that the tax will take effect on January 1, 2013.
These can be difficult decisions. While economic considerations for managing assets and income are important, it also makes sense for a taxpayer to look at the tax impact if the certain asset sales or shifts in investment portfolios are otherwise being considered.
The Tax Code provides that the IRS generally may not select an individual, partnership, or corporate tax return for audit after a period of three years has expired, dating from the tax return's filing date or due date, whichever is later. For example, if a taxpayer filed his 2011 Form 1040 on February 10, 2012, and the due date for the filing of returns that year was April 17, 2012, then the statute of limitations period ends on April 17, 2015, and not February 10, 2015. On the other hand, if the taxpayer filed his tax return late, on November 10, 2012, and had not obtained an extension of time to file, the statute of limitations period would run from November 10, 2012.
The Tax Code provides that the IRS generally may not select an individual, partnership, or corporate tax return for audit after a period of three years has expired, dating from the tax return's filing date or due date, whichever is later. For example, if a taxpayer filed his 2011 Form 1040 on February 10, 2012, and the due date for the filing of returns that year was April 17, 2012, then the statute of limitations period ends on April 17, 2015, and not February 10, 2015. On the other hand, if the taxpayer filed his tax return late, on November 10, 2012, and had not obtained an extension of time to file, the statute of limitations period would run from November 10, 2012.
If a taxpayer receives an extension of time to file the return (for example, an automatic six-month extension until October 15), however, the return is considered filed on the actual date of filing rather than the extension date. On the other hand, filing an amended tax return, such as a Form 1040X, however, would generally have no effect on the three-year period if it does not increase tax liability. For example, if the taxpayer filed his tax return on April 17, 2012, subsequently discovered a missing item of deduction, and filed an amended return on May 15, 2012 that did not increase his tax liability, the three-year state of limitations period will still run from April 17, 2012 to April 17, 2015.
For more information on the statute of limitations on tax assessments and any exceptions, please contact our office.
A remainder interest is the interest you receive in property when a grantor transfers property to a third person for a specified length of time with the provision that you receive full possessory rights at the end of that period. The remainder is "vested" if there are no other requirements you must satisfy in order to receive possession at the end of that period, such as surviving to the end of the term. This intervening period may be for a given number of years, or it may be for the life of the third person. Most often, this situation arises with real estate, although other types of property may be transferred in this fashion as well, such as income-producing property held in trust. The holder of a remainder interest may wish to sell that interest at some point, whether before or after the right to possession has inured.
A remainder interest is the interest you receive in property when a grantor transfers property to a third person for a specified length of time with the provision that you receive full possessory rights at the end of that period. The remainder is "vested" if there are no other requirements you must satisfy in order to receive possession at the end of that period, such as surviving to the end of the term. This intervening period may be for a given number of years, or it may be for the life of the third person. Most often, this situation arises with real estate, although other types of property may be transferred in this fashion as well, such as income-producing property held in trust. The holder of a remainder interest may wish to sell that interest at some point, whether before or after the right to possession has inured.
To determine the amount of gain or loss on the sale of an interest in property, you must first need to know the basis in that property. Generally, the basis of property is either the transferor's basis, if the transferor made a gift of the property while still living, or the fair market value at the time of the transfer if it was a testamentary gift. However, the value of a remainder interest is not the full value of the property, because someone else has an intervening right to its use.
The value of the remainder interest is equal to the undivided value of the property minus the value of the intervening interest. The value of this interest depends on applicable interest rates and the duration of the interest. In the case of a life estate, the duration depends on the age of the recipient and is determined with reference to mortality tables published in the Treasury regulations. The applicable interest rate is specified in Code Sec. 7520 as being 120 percent of the applicable federal rate (AFR) for that month, rounded to the nearest 0.2 percent. You may find these tables at the IRS web site.
IRS Pub. 1457 is known as Actuarial Values Book Aleph and contains tables that express the values of life estates, term interests and remainders. In this publication, you will need to select the appropriate section based on whether the interest is a term for years or a life estate. In each section is a series of tables based on interest rates ranging from 2.2 to 22.2 percent. Find the age of the life estate holder or duration of the term in the first column of the table. Next to it, under the column for remainder interests, is a decimal representation of the fractional interest represented by the remainder. Multiply this decimal by the basis of the property and you have the basis of the remainder interest.
Examples: Bob's grandfather died in March of 2009 and left a house valued at $100,000 to his mother for life, with the remainder interest to Bob. Bob's mother is 65 years old. The Sec. 7520 rate for that month is 2.4 percent, and the fractional value of the remainder is .67881. The value of Bob's interest in the house is $67,881.
This is a simple question, but the question does not have a simple answer. Generally speaking the answer is no, closing costs are not deductible when refinancing. However, the answer depends on what you mean by "closing costs" and what is done with the money obtained in the refinancing.
This is a simple question, but the question does not have a simple answer. Generally speaking the answer is no, closing costs are not deductible when refinancing. However, the answer depends on what you mean by "closing costs" and what is done with the money obtained in the refinancing.
Costs added to basis. Certain expenses paid in connection with the purchase or refinancing of a home, regardless of when paid, are capital expenses that must be added to the basis of the residence. These include attorney's fees, abstract fees, surveys, title insurance and recording or mortgage fees. Adding these costs to basis will lower any capital gain tax that you pay when you eventually sell your home. If your gain is sheltered anyway by the home sale exclusion of $250,000 ($500,000 for couples filing jointly) on the eventual sale of a principal residence, any previous addition to basis, while doing no harm, will also do no good.
Costs neither deductible nor added to basis. Other costs are neither deductible nor added to basis. These costs include fire insurance premiums, FHA mortgage insurance premiums and VA funding fees, settlement fees and closing costs.
Interest expense. Taxpayers may deduct qualified residence interest, however. "Qualified residence interest" is interest that is paid or accrued during the tax year on acquisition or home equity indebtedness with respect to a qualifying residence.
Points. Points are charges paid by a borrower to obtain a home mortgage. Other names used for deductible points are loan origination fees, loan discounts, discount points and maximum loan charges. While a fairly broad rule permits the deduction of home mortgage interest, the rule governing the deduction of points is narrower and has a number of restrictions. Points paid to refinance a mortgage on a principal residence, like other pre-paid interest that represents a charge for the use of money, are generally not deductible in the year paid and must be amortized over the life of the mortgage. However, if the borrower uses part of the refinanced mortgage proceeds to improve his or her principal residence, the points attributable to the improvement are deductible in the year paid.
Prepayment penalties. In cases where a creditor accepts prepayment of a secured debt, such as a mortgage debt on a home, but imposes a prepayment penalty, the prepayment penalty is deductible as interest.
Applicable forms. To deduct home mortgage interest and points, you must file Form 1040 and itemize deductions on Schedule A; the deduction is not permitted on Form 1040EZ.