Tax Deferral Strategies in the US: The Ones You Can Use and the Ones You Can’t Afford

This is Mike. He lives in New Jersey, he has spent eleven years being extremely responsible with money, and he has been quietly terrible at tax the entire time.

Mike is a composite character — a stand-in built from the same handful of mistakes an enormous number of real people make. His numbers are invented. His problems are not.

Here is what took him a decade to notice: nobody lied to him. Every dollar he paid was legally owed. He just paid a great deal of it earlier than he had to, in a system that rewards patience so heavily that wealthy families have organized their entire financial lives around it.

The one idea underneath all of it

Deferring tax is not evading it. It is an interest-free loan from the Treasury for as long as you can legally hold on. A dollar of tax paid in 2056 instead of 2026 is a dollar that compounded for you for thirty years first.

Every technique below is a variation on one theme: don’t realize it, wrap it, or time it.

Part one: free, this afternoon

The account that beats every retirement account in the country, which he used as a debit card

Mike has a Health Savings Account. He treats it as a spending account: medical bill arrives, swipe the HSA card, balance returns to roughly zero. This is the single most expensive habit in his financial life.

The HSA is the only triple-tax-advantaged vehicle in the US code. IRS Publication 969 spells out all three legs: contributions are deductible whether or not you itemize, “the interest or other earnings on the assets in the account are tax free,” and distributions used for qualified medical expenses “aren’t taxed.”

Two lines in Publication 969 turn it into a retirement account. You may take tax-free distributions for expenses “you incur after you establish the HSA” — with no stated deadline for claiming them — and “You don’t have to make withdrawals from your HSA each year.” So you pay medical costs out of pocket, file every receipt, let the account compound untouched for thirty years, and reimburse yourself later. Keep the documentation; the whole strategy rests on being able to produce it.

He never checked whether he had two retirement limits instead of one

Mike spent four years at a state university. Governmental 457(b) plans carry a contribution limit that is separate from the 401(k)/403(b) limit, which means an employee with access to both can contribute the full amount to each in the same year. Most public-sector employees are never told this, and simply max the one they were enrolled in by default.

He held bonds in the wrong account for a decade

Asset location costs nothing and almost nobody does it. Interest-throwing assets belong in tax-deferred accounts where the annual income is invisible; long-held equities belong in taxable accounts where they can appreciate untouched and eventually receive favorable capital-gains treatment. Mike had it precisely backwards for ten years, generating taxable interest in his brokerage account while his index funds sat inside his IRA.

Part two: worth a little admin

The bracket where capital gains are taxed at nothing

The US has a long-term capital gains bracket taxed at 0%. In a low-income year — a sabbatical, a business loss, an early-retirement gap, a year between jobs — you can realize gains inside that bracket, pay literally nothing, and immediately rebuy at a higher cost basis. There is no wash-sale rule on gains, only on losses.

The one hiding in his 401(k) statement

Mike’s employer stock sits inside his 401(k) and has appreciated substantially. There is a provision called Net Unrealized Appreciation that, on a qualifying lump-sum distribution, lets that appreciation be taxed at long-term capital-gains rates rather than as ordinary income. For someone with a large, highly appreciated employer-stock position, the difference is enormous. It is a one-shot election with strict conditions, and no institution has a commercial incentive to explain it to him.

The backdoor, and the bigger one behind it

Above certain income levels, direct Roth contributions are off the table. The “backdoor” route — contribute to a traditional IRA, convert to Roth — is well known, and its trap is the pro-rata rule, which drags every other pre-tax IRA dollar into the conversion math. Fewer people know about the mega-backdoor: after-tax contributions to a 401(k), converted to Roth, at a scale several times the ordinary limit. It only works if your plan document permits after-tax contributions and in-plan conversions, so the first step is reading the plan, not moving money.

Bunching, so his donations actually count

Mike donates every year and deducts none of it, because his itemized total never clears the standard deduction. Bunching two or three years of giving into a single tax year — often through a donor-advised fund, which lets him take the deduction now and grant the money out slowly — converts nothing into something without changing what charities ultimately receive.

Part three: the ones Mike will never be rich enough to use

Here the article stops being useful and starts being honest.

A second tax system runs above the one Mike lives in. It is entirely legal and not remotely secret — it is documented in law reviews and sold at conferences. It is gated behind a level of wealth where a six-figure legal bill is a rounding error against the tax it saves.

Buy, borrow, die. The defining structure. Never sell the appreciated asset — borrow against it instead. Loans are not income, so there is no taxable event. Live on the borrowings. On death, the asset’s cost basis steps up for the heirs, and the accumulated gain is never taxed by anyone at any point. It is the only genuine exception to the rule that deferral eventually ends.

Mike can copy the first half in miniature. A securities-backed line of credit lets him fund a short-term need without realizing a gain. It carries real risk — a margin call in a falling market is exactly how this goes wrong — but it is available well below private-bank thresholds and hardly anyone uses it.

Private Placement Life Insurance. An institutionally priced policy wrapping hedge funds and private equity, inside which everything compounds untaxed and passes to heirs free of income tax. Minimum premiums typically start around one to two million dollars. There is no retail version of this product.

QSBS stacking. Qualified small business stock carries a large exclusion — per taxpayer. So founders gift shares into multiple non-grantor trusts before a sale, each trust being its own taxpayer with its own exclusion, multiplying a single exclusion several times over. Entirely legal. Read that again and notice the technique is simply owning more taxpayers.

Exchange funds. Holding a huge concentrated position with almost no basis? Contribute it to a pooled fund alongside other wealthy people with the same problem, receive diversified exposure back, and defer the entire gain. Roughly a seven-year lock, and effectively invisible below eight figures.

Captives, GRATs, cost segregation, opportunity zones — each legal, each requiring an entity, an adviser and a fee floor that makes it pointless below a certain number.

Where the line actually is

Everything above is legal. Some of it is aggressive. Several things nearby are not legal at all, and that distinction matters more than any technique here.

The IRS publishes an annual “Dirty Dozen” list of abusive arrangements, and monetized installment sales appear on it. Syndicated conservation easements — where an inflated appraisal converts a modest land purchase into an outsized charitable deduction — are a listed transaction and have produced criminal convictions. Puerto Rico’s Act 60 regime is under active Senate Finance Committee and IRS scrutiny, with at least one taxpayer having pleaded guilty to fraud involving a large stock-sale gain. Unreported foreign accounts sit under a separate and considerably harsher enforcement regime.

The pattern in all of them is the same: a legal shell wrapped around a fact that is not true — a valuation that is not real, a residency that is not lived, a sale that is not really a sale. The structure is rarely the problem. The facts are.

What Mike actually did

He stopped spending his HSA and started a receipt folder. He checked whether his plan allowed after-tax contributions. He moved his bond funds into his IRA and his index funds into taxable. He asked HR one question about employer stock and Net Unrealized Appreciation. He bunched two years of donations into one.

None of it required a lawyer, a trust or an entity. It required knowing the rules existed — which, for reasons that are not accidental, is the part nobody is paid to tell him.

Frequently asked questions

Is deferring tax the same as evading it?

No. Deferral changes when you pay, not whether. Evasion is misrepresenting facts to avoid a liability you actually owe, and it is a crime. Everything in the first two parts of this article results in tax being paid eventually — just later, after the money that would have gone to tax has spent years compounding for you.

Is the step-up in basis really a loophole?

It is the one place where deferral becomes permanent forgiveness, which is why “buy, borrow, die” exists as a phrase. Whether that is a loophole or a deliberate policy choice about taxing unrealized gains at death is a live political argument, and one worth having with the mechanics understood rather than assumed.

Why do wealthy people get better treatment for the same activity?

On paper they do not — the rules are identical. What differs is access. Many provisions only make economic sense above a threshold where professional fees are trivial against the saving, and several require a trust, an entity or a minimum premium an ordinary balance sheet cannot justify. The rules are the same. The doors are not.

What should someone do first?

Stop spending the HSA, check whether your plan permits after-tax contributions and in-plan Roth conversions, and put your interest-generating assets in the tax-deferred account. Those three cost nothing, take an afternoon, and are worth more to most people than every exotic structure in the last section combined.

Statutory sources, all official: IRS Publication 969, which states that HSA contributions are deductible whether or not you itemize, that earnings on the account are tax free, that qualified distributions aren’t taxed, and that you don’t have to make withdrawals each year; IRS Retirement Plans for current limits. No commercial or third-party commentary was used as a source for this article.

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Disclaimer: General information, not tax or investment advice, and Linqz is not a CPA firm or a registered investment adviser. “Mike” is a composite character with invented finances, not a real person. Contribution limits, bracket thresholds and eligibility rules are indexed or amended annually and several provisions changed in 2025 legislation — each mechanism here was checked against IRS publications in July 2026, and every figure should be re-verified against the current year before you act. Several techniques described are legal but aggressive and depend on the underlying facts being genuine; consult a qualified professional about your own circumstances.