what.tax

Substack by Max Donovan | what.tax · launched Oct 16, 2024

Keep more of what you earn through smart business structuring, tax optimization, and strategic savings.

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What they write about

US tax planning for business owners and high earners. Recurring subjects include entity structure and how it affects retirement contributions, year-end deadlines and which moves expire when, the order in which to fund investment accounts, and keeping retirement income in lower brackets.

  • tax planning
  • business structuring
  • retirement accounts
  • capital gains
  • high earners

Recent examples: The Three Accounts That Determine How Fast You Reach Financial Independence · The Tax Drag That’s Adding 7 Years to Your Path to Financial Independence

Written from what.tax’s own published post titles and openings in Sep 11, 2026. It describes the subjects the newsletter covers, not its views, and is not investment advice.

Growth history

Subscribers (thousands, nightly)

18K on Sep 10, 2026 → 18K on Oct 1, 2026

Followers (thousands, nightly)

Rank in Substack’s finance leaderboard: #56 today · #56 a week ago

Stats worth sharing

Tracked since Sep 10, 2026 — 22 daily snapshots so far. The card below is built from what we track and refreshes nightly.

Percentile
Top 11%

of 525 ranked finance newsletters

Best rank seen
#55

on Sep 28, 2026

Followers added
−160

since tracking began

Posts
13

last 30 days

Reactions per post
14

average, recent posts

Reactions tracked
295

across 21 posts

Most-reacted post we have seen: How Long Until You Don’t Have to Work? The Calculation Most People Get Completely Wrong. — 31 reactions on Sep 16, 2026.

what.tax — rank, subscribers and growth, tracked by Stock Market Watch
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Recent posts

  • The Three Accounts That Determine How Fast You Reach Financial Independence

    Every financial independence calculator asks the same two questions: how much you spend and how much you save. Plug them in, and it hands you a date. For most entrepreneurs, that date is wrong, because the calculator treats every saved dollar as the same dollar. A dollar in your Solo 401(k), a dollar in your Roth IRA, and a dollar in your brokerage account carry three different tax bills and three different dates on which you’re legally allowed to spend them. You can hit your number at 46 and still be locked out of most of it until 59½. You can also hit it at 46 with the right mix and pay…

  • The Tax Drag That’s Adding 7 Years to Your Path to Financial Independence

    Most entrepreneurs know the effective tax rate on their business income to the decimal. Almost none can tell you the tax rate on their portfolio’s return. That second number is the one quietly deciding when you get to stop working. Tax drag is the gap between what your investments earn and what you keep after the IRS takes its share each year. It never appears as a single line on your return. It hides in the 1099-INT from the bank holding your operating reserve, in the capital gains distribution from a fund you never sold, in bond interest taxed at 40.8% while inflation takes most of what’s…

  • The IRS Is Catching Up to AI Income Faster Than Most People Realize

    The popular take on the IRS in 2026 is that it has been gutted, and that anyone earning money on the side can relax. Half of that is true. The agency has lost thousands of examiners. The Treasury Inspector General for Tax Administration found that the IRS lost about 27% of its examination and collection workforce from fiscal 2024 to fiscal 2025, and the decline continued: staffing fell to 19,612 by the end of fiscal 2025 and to 17,517 as of January 10, 2026. The other half is what gets people in trouble. The IRS did not stop enforcing. It changed how it enforces. It is replacing human…

  • Why Paying Off Your Mortgage Early Could Be the Worst Financial Decision You Make

    There’s a special kind of pride that comes with the words “paid off.” You see it in personal finance forums. You hear it from parents and grandparents. You feel it every time you send an extra $1,000 to the lender and watch the balance drop. The paid-off house might be the most emotionally satisfying money goal in America. It feels like safety. It feels like freedom. It feels like you won. And for a lot of entrepreneurs and business-owning W-2 earners, it’s also one of the most expensive decisions they’ll ever make. Not because debt is good. Not because you should be reckless. It’s because…

  • How to Use Your Home Equity to Build Wealth Without Selling or Refinancing

    Your equity has a yield of zero U.S. mortgage holders closed the second quarter of 2026 with a record $18 trillion in home equity, of which ICE classified $11.7 trillion as tappable, held by 47.5 million mortgage holders. That works out to roughly $212,000 per borrower, measured as what could be withdrawn while still leaving a 20% cushion in the home. That number gets reported as wealth. It behaves more like a deposit you cannot withdraw and are not paid on. Here is the part most homeowners never work through. Take two identical houses on the same street, both worth $700,000. One owner…

  • The Retirement Gap Most High Earners Don’t See Until It’s Too Late to Fix.

    The number on your statement is a gross number There is a number on your 401(k) statement, and you have been treating it as money. It isn’t. It is a claim on money, held jointly with the Treasury, at a rate that has not been determined yet. You made the contribution. Congress set the withdrawal terms, and it keeps rewriting them. This is not the usual complaint that taxes are too high. It is a narrower and more uncomfortable observation: the people who did everything right are the ones most exposed. Max out the 401(k), add the profit-sharing contribution from the business, roll every old plan…

  • How Long Until You Don’t Have to Work? The Calculation Most People Get Completely Wrong.

    Ask a room of business owners how much they need to stop working, and you will hear round numbers. Two million. Three million. Five, “to be safe.” Ask how they got there, and the answer is usually a feeling. That is the first problem. The second is harder to spot, because it hides inside people who actually do the math. They divide their savings by gross pay. They assume retirement costs what their current life costs. They apply today’s tax bracket to money that will be taxed under completely different rules. Then they borrow a withdrawal rate designed for 65-year-olds and apply it to a…

  • How to Turn a Bad Investment Year Into a Tax Advantage Before December

    Most entrepreneurs treat a losing year in their portfolio the way they’d treat a bad month of sales: something to close the books on and move past. That instinct is understandable, and it’s also expensive. A realized investment loss is not dead money. Under the right sections of the Internal Revenue Code, it behaves more like a coupon you haven’t cashed yet, one that loses value the longer you sit on it, and one your brokerage statement will never tell you how to use, because your custodian’s 1099-B has no obligation to explain your options. Here’s the part almost nobody explains clearly…

  • How to Legally Pay Less Tax on Income From Multiple Sources

    Nobody plans to overpay the IRS. But the moment your income starts coming from more than one place- that’s exactly what most entrepreneurs do- and they don’t even see it happening. The problem isn’t a missed deduction or a sloppy bookkeeper. It’s structural. The tax code doesn’t treat a consulting practice, a rental property, and a W-2 job as three separate financial lives. It treats them as one. Every dollar from every source lands on the same Form 1040, gets folded into the same taxable income figure, and gets pushed through the same set of brackets. Your second income stream doesn’t start…

  • Why the Last Quarter of the Year Is Worth More Than the First Three Combined

    Ask most business owners when they do their tax planning, and you’ll hear some version of “in the spring, when I sit down with my accountant.” That is not tax planning. That is tax reporting. By the time you are sitting across from your CPA in March, the year is over, the transactions are fixed, and the only remaining question is how accurately the two of you can describe what already happened. The person who saved $40,000 and the person who didn’t are looking at the same software. They just made different decisions in a window that closed months earlier. The calendar year is not four equal…

  • The Retirement Move That Saves $10K+ Before December 31

    The advice to max out your retirement accounts before year-end usually shows up in late November or December, right when it’s hardest to act on. Providers are backlogged, payroll teams are buried in W-2 prep, and CPAs are booked solid through New Year’s. Wait for that seasonal reminder, and you’re often reading correct advice with no realistic runway left to execute it. That’s why this issue is going out now, in September, instead. The standard version of this advice is also incomplete in a way that costs some business owners real money. An IRA deadline stretches into April. A SEP-IRA…

  • How to Cut Your Tax Bill Before Year-End Without Changing How You Earn

    Most business owners think of tax season as something that happens in March. It doesn’t. It happens right now, in the twelve weeks before the calendar flips, in decisions nobody labels as tax decisions: whether you buy the equipment this month or next, whether your kid does real work in the business or just shows up at the holiday party, whether you funded your retirement plan at all. By April, the return is just paperwork. The bill was already set in December. This matters more this year than most, because the One Big Beautiful Bill Act (OBBBA), signed into law on July 4, 2025, rewrote a…

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