
TaxBench
Solo 401(k) & SEP-IRA planner
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Free
In-App Purchases
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About
TaxBench is the retirement and tax bench for self-employed people — freelancers, solo owners, and single-member LLCs. Every personal dollar amount is calculated on your device. Your income never leaves your phone.
KNOW YOUR REAL CONTRIBUTION ROOM
See exactly how much you can still put into your Solo 401(k), SEP-IRA, or SIMPLE this year — employee deferral, employer profit-sharing, and catch-up, each tracked against the current IRS limits.
STAY ON PACE
TaxBench tells you the monthly amount to set aside to max out by year-end, and whether you're ahead or behind.
PICK THE RIGHT PLAN
Compare Solo 401(k) and SEP-IRA side by side with your actual estimated maximums, and get a plain-language recommendation for your situation.
SEE WHAT YOU'RE SAVING
A running estimate of the federal income tax your pre-tax contributions have already cut.
CATCH THE BREAKS SOLO OWNERS MISS
A review list of commonly missed levers — age-50 catch-up, unused employer room, HSA, home-office deduction, QBI — each with its IRC citation.
WORK YOUR YEAR-END LIST
A prioritized checklist with real deadlines: top off your plan by Dec 31, pay Q4 estimated tax by Jan 15, fund your HSA by the filing deadline.
CHECK YOUR RETIREMENT OUTLOOK
Project your balance to retirement in today's dollars and see the gap to your goal.
S-CORP BREAKEVEN
See whether an S-corp election would actually save you money at your income.
PRIVATE BY DESIGN
No account. No ads. No tracking. Calculations run on-device. Rule lookups use only broad, non-identifying ranges — never your actual numbers. Current IRS rules update inside the app without an App Store update, and every figure cites its IRS source.
WORKS WITH SIRI & SHORTCUTS
Check your room, log a contribution, or run a pace check by voice.
TaxBench is an informational planning tool. It does not provide tax, legal, or investment advice — confirm decisions with a tax professional. Not affiliated with the IRS.
TaxBench Plus (optional subscription) adds the whole tax picture: quarterly estimated-tax amounts with safe-harbor targets and due dates, your QBI Section 199A deduction with contribution interaction, a one-tap CSV export for your CPA, S-corp breakeven analysis, plain-language rule explanations with primary sources, and AI plan comparison - 50 AI guidance answers a month. $3.99/month or $29.99/year with a 7-day free trial. Estimates and educational guidance - not tax, legal, or investment advice.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://taxbench-mcp.vercel.app/privacy
TaxBench Plus is an auto-renewing subscription. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings.
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What's New in TaxBench
1.0.1
August 18, 2026
Fixes from early feedback: • TaxBench Plus now has its own entry on the dashboard, so you can check your subscription status, restore a purchase, or manage your plan at any time. • The number pad now has a Done button and dismisses when you scroll, so it no longer covers your results on Quarterly Estimates, S-corp Breakeven, and the other calculators. • Fixed the Manage Subscription screen failing to load.
MoreSubscription plans
Plus Monthly
Quarterly estimates, QBI, CPA export, and AI guidance
$3.991 Month





