High-income W-2 employees lower their tax bill through retirement contributions, the timing of equity sales and option exercises, and charitable gifts. A promotion, a large RSU vest, or a move to another state changes the numbers mid-year.
As income rises, familiar tax breaks fall away. Direct Roth IRA contributions phase out. The state and local tax (SALT) deduction has more room than it used to: the 2026 cap is $40,400, up from $10,000 before 2025, but it shrinks by 30% of modified adjusted gross income above $505,000 and returns to the $10,000 floor at roughly $606,000. Where your income falls in that range sets how much SALT you can deduct, and so whether itemizing beats the standard deduction. Meanwhile RSUs vest on the company’s schedule, bonuses often pay out in December or the first quarter, and a single stock-option exercise can push you into a higher bracket for one year only.
These decisions interact. An RSU vest raises your AGI, which above $505,000 shrinks the SALT cap and can push a Roth conversion or stock sale into a higher bracket, so model them together. See how equity compensation planning works for tech employees with a large share of pay in stock.
Start with a full-year tax projection before choosing strategies
Picking a tax strategy before you know your total income for the year means guessing. List the household’s expected income and deductions for the full year first. The projection shows which accounts still have room, which decisions have deadlines, and which can wait.
Map every source of household income
List every source of income likely to appear on this year’s return:
- Base salary
- Bonuses
- RSU vesting
- Stock-option exercises
- Deferred compensation
- Spouse’s income
- Interest and other investment income
Missing one of these, such as an October vest or a spouse’s year-end bonus, understates your bracket and your withholding gap for every decision made before it shows up.
Model variable compensation under multiple scenarios
Salary is predictable. Equity and bonuses are not. Model at least three cases: a lower-income or lower-stock-price case, your expected case, and a higher-income or higher-stock-price case. For each case, check:
- Marginal tax rate
- Withholding gaps
- Retirement contribution decisions
- Charitable giving plans
- Investment-sale timing
- Estimated tax payments
With only the expected case, a higher stock price leaves withholding short and a lower one leaves gifts sized for income that never arrived.
Identify which decisions are still controllable
Split the year into three buckets: what has already happened, what is expected but not final, and what is still discretionary. Planning happens in the third bucket. Discretionary decisions often include charitable gifts, some investment sales, a Roth conversion, retirement contribution elections, and other transactions you can run this year or push to the next. A Roth conversion, for example, is not something to run automatically every December. A conversion is taxed as ordinary income, so it costs less in a lower-income year.
What are the best tax strategies for high-income W-2 employees?
The strategies below fall into three groups: tax-advantaged accounts, the timing of investment sales and gifts, and equity compensation. Business owners can deduct business expenses and choose how the business is taxed. W-2 employees generally cannot, so account contributions and transaction timing carry more of the weight.
Fund the tax-advantaged accounts you qualify for
Pretax 401(k), HSA, and Dependent Care FSA contributions lower this year’s taxable income. The two Roth strategies below use after-tax dollars now to build tax-free income later. Filling every account you qualify for is still not automatically right.
Do not spend a dollar solely to save a fraction of it in tax. A retirement contribution can limit access to cash, and a gift is money committed to charity for good.
Review pretax versus Roth 401(k) contributions
Under the IRS 2026 limits, employees can defer up to $24,500 into a 401(k), plus an $8,000 catch-up at age 50 or older, or an $11,250 catch-up if you turn 60 through 63 this year. Whether that money goes in pretax or Roth depends on your current marginal rate versus your expected rate in retirement, your existing pretax balances, future required distributions, when you plan to retire, and state tax. Holding both lets you choose how much taxable income to withdraw each retirement year.
Assume a $10,000 additional pretax contribution is permitted and all of that income would otherwise fall in the 35% federal bracket. The current federal income-tax reduction is $3,500. The contribution generally does not reduce Social Security or Medicare wages, and future taxable withdrawals remain part of the decision. The same amount contributed as Roth usually creates no current reduction.
One 2026 change removes the choice for some high earners. If you are 50 or older and your prior-year FICA wages from that employer (Box 3 of your W-2) topped $150,000, any catch-up contribution you make this year must go into a Roth account. The threshold is measured per employer, not against household income. If your employer’s plan has no Roth option at all, you cannot make catch-up contributions this year. That is a federal rule, so ask your plan administrator whether the plan offers a Roth option.
Evaluate HSA contribution opportunities
If you are enrolled in an HSA-eligible health plan, IRS Publication 969 lists 2026 limits of $4,400 for self-only coverage and $8,750 for family coverage, plus a $1,000 catch-up at 55 or older. Employer contributions count toward the limit. Contributions reduce taxable income now, grow tax-free, and come out tax-free for qualified medical expenses at any age. Whether to max it out depends on current healthcare costs, expected long-term medical spending, your investment horizon, and how much cash flow you can commit. Eligibility months and Medicare enrollment can lower your personal allowance; see the HSA limits guide.
Determine whether a mega backdoor Roth fits this year
If your 401(k) plan allows after-tax contributions and in-plan Roth conversions, you may be able to contribute well beyond the standard deferral limit. The 2026 combined cap on employee deferrals, employer contributions, and after-tax contributions is $72,000. Subtract your $24,500 deferral and any employer match or profit sharing, and what remains is your potential after-tax room: up to $47,500 for someone with no employer contribution. Whether it fits this year depends on your plan’s rules, the cash you need in the next few years, and how much of your expected RSU proceeds you are setting aside for taxes. A large after-tax contribution makes less sense if it leaves you short for an April tax bill. The mega backdoor Roth guide walks through the calculation.
Evaluate a backdoor Roth IRA
Direct Roth IRA contributions phase out for 2026 at $153,000 to $168,000 of modified adjusted gross income for single filers, and $242,000 to $252,000 for married couples filing jointly. Above those ranges, a backdoor Roth (a nondeductible traditional IRA contribution converted to Roth) is one of the few ways left to add Roth dollars. The 2026 IRA limit is $7,500, or $8,600 at 50 or older.
Before converting, check your existing pretax IRA balances. The pro rata rule taxes a conversion based on the ratio of pretax to after-tax dollars across all your traditional, SEP, and SIMPLE IRAs combined, not just the account you convert. A pretax IRA in your spouse’s name does not affect your conversion, but one in your own name does.
Contribute to a Dependent Care FSA
If you have children under 13 or another qualifying dependent and both spouses work, a Dependent Care FSA lets you set aside pretax dollars for care expenses. The 2026 limit is $7,500 per household, or $3,750 if married filing separately, up from $5,000 in prior years. It is separate from your 401(k) and HSA limits. Elections are usually made at open enrollment, so check your employer’s dates.
Fund a 529 plan for education savings
If you are saving for a child’s education, 529 contributions may qualify for a state income tax deduction depending on where you live and which plan you use. The 2026 annual gift tax exclusion is $19,000 per recipient, or $38,000 for a married couple. A 529-specific rule lets you front-load five years of that exclusion at once, up to $95,000 individually or $190,000 as a couple, without using lifetime exemption, though it requires filing IRS Form 709. Front-loading is the wrong move if it competes with retirement contributions or an emergency fund.
Pretax 401(k), HSA, and Dependent Care FSA contributions are how most high earners lower this year’s taxable income directly. The backdoor and mega backdoor Roth strategies work differently: they leave this year’s bill unchanged and build tax-free income for later.
Time investment sales and charitable gifts
Unlike payroll, investment sales and gifts happen on dates you pick, so you can place each one in the tax year where it saves the most.
Harvest capital losses before the deadline
Selling an investment at a loss offsets capital gains dollar for dollar, and up to $3,000 of losses beyond that can offset ordinary income each year ($1,500 if married filing separately), with any excess carried forward indefinitely. The sale must happen by December 31 to count for this year; leave time to choose a replacement holding instead of selling in the last week. See the tax-loss harvesting guide.
The wash sale rule undoes a careless harvest. Buy a substantially identical security within 30 days before or after the sale and the loss is disallowed, which makes the window 61 days wide. In a taxable account the disallowed loss is added to the basis of the replacement shares, so it stops helping you this year. If the replacement purchase happens in your IRA, the loss is generally gone for good. The rule also reaches a spouse’s purchases. Decide on your replacement holding before you sell.
Time large capital gains around your bracket and the NIIT
A large gain from a concentrated-stock sale, a rental property, or another investment can push you into a higher bracket and trigger the 3.8% net investment income tax once modified adjusted gross income passes $200,000 (single) or $250,000 (married filing jointly). Those thresholds are not indexed for inflation, so more households cross them every year.
Federal long-term rates are 0%, 15%, or 20% depending on taxable income. For 2026 the 20% rate begins at $545,500 for single filers and $613,700 for joint filers. Spreading a sale across two tax years, or keeping it out of the year of a big bonus or vest, can keep more of the gain in the 15% band and below the NIIT threshold. Shares held a year or less are taxed at ordinary rates, so check the holding period before you sell. Deferring a sale does not guarantee a better result; weigh it against cash needs and concentration risk.
Give through a donor-advised fund
A donor-advised fund lets you contribute cash or stock now, take the deduction in the year you give, and choose which charities receive grants later. The deduction is worth more in a year when a large bonus, RSU vest, or option exercise puts you in a higher bracket. The contribution is irrevocable: the money is set aside for charity, not future personal spending.
Two rules changed for 2026, and both shrink the deduction. Itemizers can deduct only the portion of charitable giving above a 0.5% floor, measured against the contribution base (generally AGI). A household with $600,000 of AGI gets no deduction on the first $3,000 given. And taxpayers in the 37% bracket now receive 35 cents of deduction value per itemized dollar rather than 37. Neither change touches the separate benefit of giving appreciated stock, which is skipping the capital gain, but both change how much a gift saves, so compute the deduction before you give. Review the IRS charitable-contribution rules before counting the deduction.
Bunch multiple years of giving into one
Bunching combines several years of planned giving into a single year, often through a donor-advised fund, so that year’s itemized deductions clear the standard deduction while you take the standard deduction in between. The test is your total itemized deductions, including state and local taxes and mortgage interest, not your giving alone. With the 2026 SALT cap at $40,400, more high earners will clear the standard deduction without bunching, so run the comparison on your own numbers.
The 0.5% floor gives bunching a second reason. One large gift clears the floor once. The same total spread across four years gets trimmed by the floor four times.
Donate appreciated stock instead of cash
Donating shares held more than one year lets you deduct fair market value while avoiding the capital gains tax you would owe if you sold first. If much of your net worth is in employer stock, giving long-held shares also reduces that concentration without a taxable sale; see diversifying a concentrated position.
The holding period is where RSU holders get caught. Your holding period on RSU shares starts at vesting, and your basis is the amount already taxed as compensation. Shares that vested less than a year ago are short-term property, and the deduction is generally limited to basis instead of fair market value, which removes most of the advantage. Check the vest date before choosing which lots to give.
Appreciated stock given to a public charity or donor-advised fund is generally deductible up to 30% of AGI, lower than the ceiling for cash gifts, with any excess carried forward for up to five years. On a large gift that ceiling can bind before the dollar amount does.
Equity compensation: RSUs, bonuses, and stock options
Plan for RSU vests before they happen
Build a calendar of every vesting date for the year, then model compensation income under different stock-price scenarios. Employers can withhold a flat 22% federal rate on supplemental wages up to $1 million and must withhold 37% above that, regardless of your marginal rate. That flat rate is why RSUs often feel taxed so high. For high earners whose marginal rate is closer to 35% or 37%, it leaves a gap that shows up as a bill at filing time. State and payroll taxes are separate; see the IRS employer guide. The RSU tax calculator estimates the gap in advance, and how RSU withholding works covers the mechanics. Increasing withholding pays the bill sooner; it does not reduce it. Decide before the vest whether you will sell or hold, and check what share of your net worth is in employer stock.
Recalculate after bonuses and promotions
A bonus or raise adds income, and it can also push you into a higher bracket, change how much withholding you need for the rest of the year, and change whether a gift or investment sale belongs in this year or next. Rerun the projection after each one.
Model stock-option exercises alongside other income
Model an option exercise against your salary, RSU income, bonuses, and investment gains for the year, since the total determines your bracket. Exercising an incentive stock option and holding the shares can trigger the alternative minimum tax even though you have not sold anything, and the bill can come due with no sale proceeds to cover it. Whether you hold an ISO or an NSO decides whether that risk applies. The resulting AMT credit can take years to recover, so an ISO exercise deserves its own model; see how to avoid AMT on ISOs. Nonqualified options do not carry that AMT risk, but they add ordinary income at exercise, with its own withholding and bracket effects. A tender offer or secondary sale deserves the same scenario modeling, and the checklist for an equity liquidity event covers the transaction year.
Review deferred compensation elections before the deadline
If your employer offers a nonqualified deferred compensation plan, elections generally have to be made before the calendar year starts, and they are usually irrevocable once made. Weigh your current income against expected future income, your employer’s credit risk (deferred amounts are usually unsecured), how and when distributions will be paid, your retirement timeline, and state tax, since treatment can depend on where you live when the money is paid. Nino’s state tax calculators show how much that varies.
What can change your tax strategy during the year?
Rerun the January projection after any of the events below, and compare the new total tax with withholding and estimated payments. The IRS estimated-tax guidance explains why payment timing matters even when the final amount is right.
Your compensation changes
A promotion, a bonus adjustment, a new RSU grant, a swing in your stock price, severance, or a deferred compensation payout each change projected income enough to rerun the projection.
Your household income changes
The same applies on your spouse’s side: a promotion, a job change, a shift in business income, leave, or retirement all move the household’s total.
You make a major investment or property transaction
Selling concentrated stock, a rental property, or your primary home, realizing a large portfolio gain, or exercising an option can shift you into a different bracket for the year of the transaction.
Your life plans change
Relocating, buying a home, taking a sabbatical, retiring, making a major gift, or changing jobs each change your income, deductions, or the state that taxes you, so model them before the date. A move needs the closest look, since your former state can tax equity income earned while you lived there.
Set a date for each decision
Most of what determines a high-income W-2 employee’s tax bill is still within your control: which retirement accounts get funded and in what order, when investments get sold, how a concentrated position is diversified, whether you give cash or stock, how much is withheld, and which transactions happen this year versus next.
Tax preparation records a year that has already ended. These decisions have to be made by December 31, and deferred compensation elections before the year starts. Aim for the lowest total tax across several years, not the lowest bill for one April. Give each action an owner and a date: who changes payroll, who makes the payment, and when the estimate gets checked again.
Nino connects bank, brokerage, and retirement accounts, updates balances daily, and records equity grants you enter in a grant form. Software plans start at $20/mo. Advisor plans add a human CPA and CFP, with federal and state tax filing included, from $300/mo billed annually; the CPA prepares your return and nothing is filed until you approve it. See how the process runs, and how it works for a two-income household with two sets of equity.