US tax planning calculators

Small tax moves deserve clear numbers.

ClearYear helps you estimate tax impact before a vest, sale, invoice, bonus, contribution, or quarterly payment hits your calendar.

28 toolsStock comp, tax timing, investing, 1099 work, and retirement
2026-awareKey limits and due dates follow current IRS releases
Built for decisionsUse it before moving cash, shares, or contribution dollars
Calculator and paperwork on a warm desk
TodayEstimate first
Next movePay, sell, save
LibraryPractical tax tools, not a filing appFast planning for the moments that happen before tax software.
When income is uneven

RSUs, bonuses, 1099 payments, stock sales, and dividends can break a normal paycheck rhythm.

When dates matter

Wash-sale windows, 83(b) deadlines, holding periods, and estimated-tax due dates are easy to miss.

When limits matter

IRA, HSA, Solo 401(k), mileage, and safe-harbor thresholds need quick checks.

Start here

Choose the moment you are planning for.

Stock comp

Equity and payroll surprises

RSUs, ESPPs, ISOs, NSOs, and 83(b) decisions.

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Tax timing

Tax timing

Safe harbor, extensions, extra withholding, and payment pacing.

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Investing

Investing

Wash sales, gains, dividends, carryovers, and NIIT.

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Self-employed

Self-employed

1099 payments, SE tax, mileage, home office, and reserves.

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Retirement

Retirement

IRA, Roth, Backdoor Roth, HSA, and Solo 401(k) checks.

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Featured calculators

Good first pages for common tax moves.

Stock comp

RSU Tax Gap Calculator

Estimate whether flat supplemental withholding is likely to trail your real marginal tax rate.

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Tax timing

Estimated Tax Safe Harbor Calculator

Check the federal estimated-tax safe-harbor target using current-year and prior-year rules.

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Investing

Wash Sale Window Calculator

Find the 30-day before and after window around a loss sale.

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Self-employed

Self-Employment Tax Calculator

Estimate Social Security and Medicare tax on net self-employment profit.

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Retirement

Solo 401(k) Contribution Calculator

Estimate employee deferral plus an approximate employer contribution for self-employed profit.

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Retirement

Backdoor Roth Pro-Rata Calculator

Estimate the taxable portion of a Roth conversion when pre-tax IRA dollars exist.

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Clear scope

Useful estimates before final forms.

ClearYear is for planning, not filing. Use it to pick the next check, then confirm final numbers with your forms, payroll records, brokerage statements, and tax professional.