Tax · 14 calculators
Quarterly estimates, withholding, state-by-state 1099 math, AMT, QBI 199A, NIIT, FEIE, depreciation recapture, capital-gains step-up.
Self-employed tax path
The category now behaves like a workflow: start with a taxpayer profile, open the exact calculator you need, then continue into adjacent tax steps without losing context.
Preset chips prefill the full chain and primitive calculators.
Result endcaps carry the selected taxpayer profile forward.
Related tax rails connect deductions, QBI, brackets, and quarterlies.
Tax profile shortcuts
Tax questions branch quickly: full freelancer chain, quarterly payment, or bracket-by-bracket view. These profile starts keep the assumptions consistent across the category.
W-2 profile
Single filer with 401(k)/HSA-style deductions and moderate state tax.
Dashboard companions
mitchreise.com1099 profile
1099 income with self-employment tax and a planning-rate state estimate.
Dashboard companions
mitchreise.comW-2 profile
Married filing jointly with larger pre-tax savings and higher gross income.
Dashboard companions
mitchreise.comW-2 profile
HOH filer where the standard deduction changes the effective-rate story.
Dashboard companions
mitchreise.comStart here
All tax calculators
Capital gains step-up tax savings
Compute the federal capital gains tax SAVED via the step-up in basis at death — comparing inherited-and-sold vs gifted-during-life on appreciated property.
SEP-IRA vs Solo 401(k) max contribution
Compare the maximum tax-deductible retirement contribution for self-employed under SEP-IRA vs Solo 401(k) at your net SE income.
Section 179 deduction calculator
Compute Section 179 immediate expensing for business equipment vs MACRS depreciation, including phase-out at the $3.13M cap (2024).
Foreign earned income exclusion calculator
Compute the federal tax savings from the Foreign Earned Income Exclusion (FEIE) for US citizens working abroad — earned income up to $126,500 (2024).
Depreciation recapture tax calculator
Compute the depreciation recapture tax owed on rental property sale — Section 1250 unrecaptured gain at 25% federal flat plus state.
SALT cap impact calculator
Quantify the federal tax loss from the $10,000 State and Local Tax (SALT) deduction cap — comparing actual paid vs deductible cap.
Roth conversion ladder tax cost
Project the federal tax cost of converting traditional IRA balances to Roth over multiple years to manage bracket-by-bracket taxation.
Net Investment Income Tax (NIIT) calculator
Calculate the 3.8% ACA surtax on investment income above the $200k/$250k MAGI threshold — including the lesser-of NII vs MAGI-excess rule.
Section 199A QBI deduction calculator
Calculate the 20% qualified business income deduction for pass-through owners, including SSTB phase-outs and the W-2 wage / UBIA limitation.
FAQ
It computes federal income tax (current brackets), self-employment tax (15.3% on net SE income up to the wage base, 2.9% above), and state tax — then divides by four for the quarterly payment. The safe-harbor variant runs the IRS rules: pay 100% of last year's liability (110% if AGI > $150k) and you're penalty-protected regardless of how much more you actually owe. Most freelancers should use safe-harbor for the simplicity.
After TCJA, AMT applies to a much narrower slice — primarily high-W-2 earners with significant ISO exercises, large state-tax deductions (now capped via SALT), and certain investment situations. The calculator runs both regular and AMT tracks and shows you the higher of the two. If you're a typical W-2 employee with a standard deduction, AMT is unlikely to bite. If you exercised a lot of ISOs in-the-money, run it.
Up to 20% of qualified business income for pass-through entities — sole props, partnerships, S corps, REITs. The calculator handles the wage-and-W-2 limits, the SSTB (specified service trade or business) phase-outs, and the threshold income tests. For a profitable LLC at moderate income, this deduction alone is often worth $5-30k of federal tax.
It helps when you have realized gains to offset, or when the $3,000 ordinary-income offset matters (carry-forward indefinitely). The calculator quantifies the harvest in dollar terms — losses harvested × your effective rate — and flags wash-sale exposure (same security purchased within 30 days resets the basis and disallows the loss). High-bracket investors with active portfolios can save thousands per year.
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