June is the best time to do a mid-year tax review — early enough to make meaningful changes, late enough to have real income data. Whether you're a W-2 employee, freelancer, or retiree, the next few months are when tax decisions have the most impact. Here are seven things worth reviewing before July.
1. Check Your Withholding Against Your 2026 Liability
The OBBBA changed several provisions that took effect January 1, 2026 — including a higher standard deduction, expanded SALT deduction cap, and a new senior deduction. If your W-4 hasn't been updated since 2024 or 2025, your withholding may not reflect your actual 2026 tax situation.
The quick test: use our federal income tax calculator to estimate your 2026 liability based on your year-to-date income (annualized). Then check your pay stubs to see how much has been withheld so far. If you're tracking significantly short, you have time to submit a new W-4 to your employer and increase withholding for the rest of the year.
2. Verify Your Quarterly Estimated Payments Are on Track
If you're self-employed, have significant investment income, or receive income not subject to withholding, you're generally required to make quarterly estimated payments. The Q2 2026 estimated tax deadline is June 16, 2026. Miss it and you may owe an underpayment penalty even if you pay in full at filing.
The safe harbor rule: you can avoid penalties by paying either 100% of your 2025 tax liability (110% if your 2025 AGI exceeded $150,000) or 90% of your 2026 liability — whichever is smaller. See our quarterly estimated tax guide for payment deadlines and how to calculate.
3. Review the New SALT Deduction Cap
One of the most significant OBBBA changes for itemizers is the expansion of the SALT (state and local tax) deduction cap from $10,000 to $40,000 for 2026 (phasing out at higher income levels). If you pay significant state income tax and/or property taxes — particularly in high-tax states like California, New York, or New Jersey — this change may make itemizing worthwhile for the first time in years.
Compare your total itemizable deductions (mortgage interest, state and local taxes up to the new cap, charitable contributions) against the 2026 standard deduction: $15,750 for single filers and $31,500 for married filing jointly. If itemizing beats the standard deduction, update your withholding or estimated payments accordingly. See our standard deduction vs. itemizing guide for the full comparison.
4. Max Out Retirement Contributions If You Haven't Already
Retirement contributions reduce your taxable income dollar-for-dollar, making them one of the most powerful mid-year tax moves available. For 2026, contribution limits are:
- 401(k) / 403(b): $23,500 (plus $7,500 catch-up if 50 or older)
- IRA (traditional or Roth): $7,000 (plus $1,000 catch-up if 50 or older)
- HSA: $4,300 for self-only coverage / $8,550 for family coverage
- SEP-IRA (self-employed): Up to 25% of net self-employment income, max $70,000
If you're behind on 401(k) contributions, contact your HR department to increase your deferral percentage now — changes typically take a pay cycle or two to take effect.
5. Consider Whether You Qualify for the New Senior Deduction
The OBBBA created a temporary above-the-line deduction of up to $6,000 for taxpayers age 65 or older ($12,000 for married couples where both spouses qualify), available for tax years 2025 through 2028. This deduction is in addition to the standard deduction and phases out at higher income levels.
If you or your spouse turned 65 in 2026 or are already eligible, factor this deduction into your estimated tax calculation — it may reduce your quarterly payment requirement or adjust your withholding needs. See our full breakdown in The New $6,000 Senior Deduction.
6. Harvest Investment Losses Before Year-End
If you have investments sitting at a loss, mid-year is a good time to evaluate tax-loss harvesting — selling losing positions to offset realized gains elsewhere in your portfolio. Capital losses offset capital gains dollar-for-dollar. If losses exceed gains, up to $3,000 can be deducted against ordinary income annually, with the remainder carried forward.
Key rule: the wash-sale rule prohibits repurchasing a substantially identical security within 30 days before or after the sale. If you want to stay invested in the same sector, buy a similar-but-not-identical ETF or fund during the 30-day window. See our capital gains tax calculator to estimate the impact of harvesting a specific position.
7. Update Your Records for Life Changes
Tax liability is highly sensitive to life events. If any of these happened in 2026, your tax situation may have changed substantially — and your withholding or estimated payments should reflect it:
- Marriage or divorce — filing status change affects brackets, standard deduction, and FICA
- New child — Child Tax Credit ($2,200 per child under OBBBA), dependent care credits
- Job change — withholding resets; lump-sum income from severance may need estimated payments
- Home purchase or sale — mortgage interest deduction, potential capital gains exclusion
- Started freelancing — SE tax now applies; quarterly payments required
For any of these situations, run a fresh estimate with our tax refund calculator to see where you stand for the year.
The Bottom Line
The best tax moves happen during the year — not at filing time. Mid-year adjustments to withholding, estimated payments, and retirement contributions can meaningfully reduce your April bill or eliminate a penalty. The 2026 tax year brought enough rule changes from the OBBBA that it's worth a fresh look even if nothing in your personal situation has changed.