The instinct to defer income and accelerate deductions is built into most tax planning conversations. But it’s not always right. Whether pushing income into the next year — or pulling it into this one — is the better move depends entirely on what your tax rate looks like in both years. Getting this wrong doesn’t just leave money on the table; it can shift income from a lower bracket into a higher one.

The Core Logic of Timing Income

Federal income taxes are progressive and applied on a year-by-year basis. Income recognized in 2026 is taxed at 2026 rates; income recognized in 2027 is taxed at 2027 rates. If your effective marginal rate will be lower next year than it is this year, deferral saves money. If your rate will be higher next year, accelerating income now — paying tax at today’s lower rate — is the better play.

The problem is that most people only think about one direction. They defer everything, assume next year will be similar, and never check. When circumstances change — a business sale, a large distribution, a property sale, retirement — the rate differential can be significant, and the direction of the planning needs to flip.

When Deferral Makes Sense

Deferral is the right strategy when your income is higher than normal this year and likely to return to a lower level in the future. Common situations include a one-time income spike from a business sale, large contract, or asset disposition. If this year’s taxable income is $600,000 and next year is likely to be $200,000, deferring anything you can into next year keeps more of it out of the top brackets.

Retirement approaching in one to three years is another common trigger. If you’re currently in a high earning year and will have significantly lower income once you stop working, deferring income via retirement account contributions, installment sales, or postponing discretionary income events can save substantially. The same logic applies if expected deductions next year won’t be available this year — if a large charitable gift, medical expense, or business loss is coming next year, having more income to match against it makes sense.

When Acceleration Makes Sense

Income acceleration — recognizing income sooner than necessary — is the right move when your rate is lower now than it will be in the future. The individual rate cuts and expanded standard deduction from the Tax Cuts and Jobs Act were originally scheduled to expire after 2025, and for years that looming sunset was the go-to reason to accelerate income into a lower-rate year. The One Big Beautiful Bill Act, signed in July 2025, made those TCJA individual rates and the larger standard deduction permanent, so a nationwide reset to higher rates is no longer the driver it used to be. That doesn’t eliminate the acceleration strategy — it just means the reason has to come from your own situation now: a state tax rate increase, a planned move to a higher-tax state, a business sale that will push you into a higher bracket next year, or a targeted provision with its own sunset date. Model the actual rate change you expect, rather than assuming a broad law change will do the work for you.

A low-income year due to job change, business loss, or leave is another trigger — if this year is unusually low income, it may be an optimal year to do a Roth conversion, harvest capital gains at 0%, or recognize other income that would otherwise hit harder in a normal year. A growing business with rising income also matters: if your taxable income is $180,000 this year and is likely to be $400,000 in two years, pulling income recognition forward can avoid a higher future rate.

Specific Tools for Timing Income

On the deferral side, retirement account contributions (401(k), SEP-IRA, defined benefit plan) reduce current-year income directly. Year-end is the deadline for elective deferrals; contributions to SEP-IRAs and some other plans can be made until the tax return due date. Installment sales let you spread gain from property or business sales over multiple years — if you’re selling a business or real estate and the buyer is creditworthy, structuring as an installment sale shifts income recognition into future years, and you have until year-end to elect out of installment treatment if you choose. Deferred compensation arrangements for business owners can shift bonus or service income into future years, but must comply with Section 409A’s strict rules on timing, elections, and distributions.

On the acceleration side, Roth conversions pull IRA balances into current-year income voluntarily. If the current year is a low-income year, a partial or full conversion can be done at lower rates, and future growth and withdrawals become tax-free. Harvesting embedded capital gains is most powerful in years when your taxable income falls below the 0% long-term capital gains threshold — a figure that adjusts annually for inflation, so verify the current-year number with your advisor. In those years, you can sell appreciated assets and pay no federal capital gains tax.

The Rate Projection Problem

All of this requires knowing what your rate will be in future years — and that’s genuinely hard to predict. It requires projecting income, deductions, life changes, and tax law changes simultaneously. At minimum, if you’re in any of these situations, the conversation with your tax advisor needs to happen in the fourth quarter: a major income event this year or next, approaching retirement, expecting significant deductions or losses, considering a Roth conversion, or thinking about selling a business or large asset.

Frequently Asked Questions

Q: Can I defer W-2 income from my employer?
A: Generally not directly, unless your employer has a nonqualified deferred compensation plan. You can defer pre-tax retirement contributions, but you can’t simply ask to receive your salary in January instead of December. Independent contractors have more flexibility over when they invoice and recognize income.

Q: Does deferral just push the problem into next year?
A: Yes — deferral is timing, not elimination. You’re betting that the future rate is lower, not that the tax goes away. In most individual situations, tax is ultimately paid; the question is when and at what rate.

Q: What about state income taxes?
A: State taxes can meaningfully change the analysis, particularly if you’re considering moving to a lower- or no-income-tax state. Accelerating income before a move to a no-tax state versus deferring it into a year when you’ll still be in a high-tax state can produce very different outcomes.

Timing income is one of the more nuanced levers in tax planning — and one that requires knowing your whole picture, not just the current year. If your circumstances are changing, don’t let the year end without reviewing whether the default deferral assumption is actually working in your favor.

If you’d like to apply this to your situation, the team at Molen & Associates is here to help. Schedule a consultation at molentax.com.