Most of what YieldMax’s MSTR Option Income Strategy ETF (MSTY) pays out each month is taxed as ordinary income at your full marginal federal rate, which for the 2026 tax year runs from 10% to 37%. A portion of each year’s distributions is often reclassified as return of capital, which isn’t taxed in the year you receive it but lowers your cost basis in the shares. The exact split shifts year to year based on the fund’s actual earnings, and the preliminary numbers your brokerage shows each month are not the numbers you file with.
Why the Payouts Hit at Ordinary Income Rates
MSTY earns most of its cash by writing call options on a single stock, MicroStrategy (MSTR). That distinction controls the tax treatment. Section 1256 of the Internal Revenue Code gives favorable 60/40 treatment (60% long-term, 40% short-term) to certain “nonequity options,” meaning broad-based index options. Options on individual stocks are “equity options” under Section 1256(g)(6), and when non-dealers hold them they are explicitly excluded from Section 1256 treatment.1Office of the Law Revision Counsel. 26 USC 1256 – Section 1256 Contracts Marked to Market MSTY’s option premiums on MSTR shares therefore produce ordinary short-term gains, and when a regulated investment company distributes short-term gains, shareholders report them as ordinary dividends.
The distributions also fail the definition of a qualified dividend. Qualified dividends have to come from a corporation’s earnings on stock, and the shareholder has to meet a holding-period test around the ex-dividend date. Option premium income isn’t a dividend from corporate earnings, so it doesn’t reach the lower long-term capital gains rate. Your MSTY income lands at whatever bracket your total income puts you in.
Return of Capital and Your Cost Basis
When MSTY pays out more cash than its actual earnings and profits for the year, the excess is classified as return of capital under Section 301(c)(2).2Office of the Law Revision Counsel. 26 USC 301 – Distributions of Property That portion isn’t taxable in the year you receive it. Instead, it reduces your cost basis in the shares, dollar for dollar.
The math is straightforward. Buy at $20.00, receive $0.50 of return of capital, and your adjusted basis becomes $19.50. Nothing owed now, but when you sell, the lower basis produces a larger taxable gain. You need to track every return-of-capital distribution across the life of the position, because the IRS expects your basis to reflect all of them.
If enough return-of-capital distributions accumulate to drive your basis to zero, the rule flips. Under Section 301(c)(3), any further return-of-capital amounts are treated as capital gains, taxable in the year received.2Office of the Law Revision Counsel. 26 USC 301 – Distributions of Property Whether they’re short-term or long-term depends on how long you’ve held the shares by that point. For a long-term holder collecting large monthly payouts, hitting a zero basis is realistic, and it catches people off guard when “nontaxable” distributions suddenly start generating tax.
The 3.8% Net Investment Income Tax
Higher earners face an added layer. Section 1411 imposes a 3.8% surtax on net investment income, a category that includes dividends and capital gains, when modified adjusted gross income exceeds these thresholds:3Office of the Law Revision Counsel. 26 USC 1411 – Imposition of Tax
- Single filers: $200,000
- Married filing jointly: $250,000
- Married filing separately: $125,000
These thresholds are not indexed for inflation and haven’t moved since the tax began in 2013.4Internal Revenue Service. Questions and Answers on the Net Investment Income Tax The surtax stacks on top of ordinary rates, so a 37%-bracket investor could face an effective federal rate of 40.8% on MSTY’s ordinary dividend distributions.
Why the Monthly 19(a) Notice Isn’t Your Final Answer
Each month MSTY issues a Section 19(a) notice estimating how much of that distribution came from net income, capital gains, and return of capital. The notices exist because federal rules require funds to disclose the source of a distribution so shareholders don’t assume all of it is investment income.5U.S. Securities and Exchange Commission. Shareholder Notices of the Sources of Fund Distributions – Electronic Delivery If an earlier estimate turns out to be materially off, the fund has to correct it.6eCFR. 17 CFR 270.19a-1 – Written Statement to Accompany Dividend Payments by Management Companies
Note the word “estimate.” The fund can’t know its true earnings and profits until the fiscal year closes and all gains, losses, and expenses are counted. A March distribution that looked like 80% ordinary income and 20% return of capital may end up reclassified as 60/40 or 95/5 after year-end accounting. Only the 1099-DIV reflects the real breakdown. Filing from monthly 19(a) numbers is a common mistake and can leave you overpaying or underpaying.
What Shows Up on Your 1099-DIV
Your brokerage issues Form 1099-DIV after the calendar year ends, and it’s the document you actually file from. Two boxes drive the MSTY entries:
- Box 1a, Total Ordinary Dividends: the amount you include in gross income, covering dividends, short-term capital gains distributed by the fund, and reinvested dividends.7Internal Revenue Service. Instructions for Form 1099-DIV
- Box 3, Nondividend Distributions: the return-of-capital amount, which does not go on your return as income but must be subtracted from your basis records.7Internal Revenue Service. Instructions for Form 1099-DIV
The form is typically finalized in February. If the fund needs additional time for its earnings calculations, the brokerage may delay delivery. Don’t file with the preliminary figures.
Estimated Tax Payments and Safe Harbors
MSTY distributions arrive with no automatic withholding. If you’re collecting substantial monthly cash without setting money aside, you can face a large April bill and an underpayment penalty on top of it.
Quarterly estimated payments are required when you expect to owe $1,000 or more beyond withholding from other sources. For 2026, the deadlines are April 15, June 15, and September 15 of 2026, plus January 15, 2027.8Internal Revenue Service. 2026 Form 1040-ES You can skip the January payment if you file and pay the balance by February 1, 2027.
To avoid a penalty, you generally need to pay the lesser of 90% of your current year’s tax or 100% of last year’s tax through withholding and estimates combined. If your adjusted gross income last year exceeded $150,000 ($75,000 if married filing separately), the second figure rises to 110%.9Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty Investors holding meaningful MSTY positions typically end up using the 110% safe harbor.
The Wash Sale Trap With Monthly Reinvestment
Sell MSTY at a loss and buy it back within 30 days on either side of the sale, and Section 1091 disallows the loss. The disallowed amount is added to the basis of the replacement shares instead of being deducted.10Internal Revenue Service. Application of Wash Sale Rules The benefit isn’t lost forever, but it’s deferred, sometimes indefinitely if you keep rolling.
The specific trap for MSTY investors is dividend reinvestment. If DRIP is on and you sell at a loss, the next monthly distribution reinvested into new MSTY shares counts as buying a substantially identical security. With payouts every month, you’re almost guaranteed to trigger a wash sale unless you turn off reinvestment at least 31 days before the loss sale. The IRS treats reinvested distributions as acquisitions for wash sale purposes.10Internal Revenue Service. Application of Wash Sale Rules
Holding MSTY Inside an IRA
Because MSTY distributions carry no qualified dividend benefit and hit at ordinary rates, a traditional or Roth IRA is a natural home for the position. Inside an IRA, distributions compound without a yearly tax bill; inside a Roth, qualified withdrawals come out tax-free.
Unrelated business taxable income is a concern with certain partnerships and MLPs that use leverage, not with standard ETFs organized as regulated investment companies. MSTY is a registered investment company, so its distributions generally do not create a UBTI problem in a retirement account. The practical effect is that the ordinary rate, the 3.8% NIIT, and the estimated payment obligations all fall away in one move. The tradeoff: distributions inside an IRA can’t be used to generate capital losses, and traditional IRA withdrawals are eventually taxed as ordinary income anyway.