The 0% Capital Gains Bracket: The Years You Can Sell for Free

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Everyone knows about harvesting losses. Far fewer know the mirror-image strategy — and the mirror image is better, because it isn’t a deferral. Below a taxable-income threshold (around the mid-$90,000s for joint filers, ~$48,000 single, adjusting annually), long-term capital gains are taxed at 0%. Not deferred. Not reduced. Zero. In the right years, you can sell appreciated assets, pay nothing, and even buy them right back.

How the stacking works

Capital gains sit on top of ordinary income in the calculation. A retired couple with $60,000 of ordinary income has roughly $35,000 of 0%-bracket room: they can realize $35,000 of long-term gains this year federally tax-free. Gains beyond the line spill into 15% — only the excess, not the whole gain. The bracket is measured on taxable income (after the standard deduction), so gross incomes well above $120,000 can still have room.

Gain harvesting: the free basis reset

Inside the room, sell appreciated positions and — because there’s no wash-sale rule on gains — immediately repurchase them. Nothing changes in the portfolio; the basis steps up permanently. Do this annually through low-income years and you can drain decades of embedded gains at 0%, gains that would otherwise be taxed at 15–23.8% later. It’s the rare strategy that’s literally free money, limited only by the room and your record-keeping.

Whose strategy this is

  • The retirement gap years — the golden window between the last paycheck and Social Security/RMDs. These same years compete for Roth-conversion room, which is the real planning question: conversions fill the bracket with ordinary income and destroy the 0% room dollar-for-dollar (conversion income pushes gains up the stack). Each gap year gets allocated deliberately: convert, harvest gains, or split — modeled, not vibed.

  • Sabbaticals, career breaks, one low business year — any temporary income dip.

  • Early retirees engineering income for ACA subsidies must add that layer: realized gains are MAGI, and subsidy cliffs can quietly out-tax the 0% bracket. Whole-picture math only.

  • Your adult kids — gifting appreciated shares to a low-income adult child (past kiddie-tax age) who sells in their 0% bracket moves the family’s gain to a 0% taxpayer. Legitimate, bounded by gift rules and the kiddie tax for younger children.

  • Parents funding college in low-income years, retirees rebalancing concentrated positions — anyone whose income dips below the line with gains waiting.

The fine print

State tax doesn’t play along — New Jersey taxes the gain regardless (one more input, not a veto; NJ rates at modest retirement incomes are low). The gains still feed Social Security taxation, IRMAA, and the NJ pension-exclusion income test — check the thresholds before harvesting near them. And the assets must be long-term; short-term gains stack as ordinary income.

The habit

Every fall, low-income households (and their advisors) should ask one question: how much 0% room exists this year, and what’s the highest-value use of it? The room expires every December 31, unused room is unrecoverable, and across a retirement it can shelter hundreds of thousands of gains — for households who simply knew to look.

Romanchuk CPA LLC is a fully virtual CPA firm serving investors, equity-compensated professionals, and business owners nationwide since 2014, with NJ/NY depth. Book a consultation at rfg.tax.

This article is general information, not tax or investment advice for your specific situation. Figures adjust annually — verify current amounts.