Retirement and tax planning calculators
Enter your numbers and get the 2026 answer step by step, with the rule behind it.
Withdrawals and RMDs
Roth and IRA
Self-employed and small business
- Solo 401(k) contribution$72,000 + catch-up
- SEP IRA contribution20% of net
- Self-employment tax15.3% to $184.5k
- 1099 taxSet-aside %
- Quarterly estimated taxSafe harbor
- DoorDash and gig driver tax72.5¢ → 76¢/mi
- W-2 vs 1099Break-even pay
- S corp tax savingsSalary vs draw
- QBI deduction (Section 199A)20% of QBI
- Home office deduction$5/sq ft simple
- Section 179 deduction$2.56M limit
- Cost of an employeeWage + ~20-30%
Social Security, Medicare and HSA
TSP, FERS and military
Brackets and investment tax
I bonds, T-bills and ladders
FIRE and early retirement
Lump sums and payoffs
State taxes
- State income tax50 states
- State capital gains tax47 states
- State estimated tax39 states
- State 529 tax deductions40 states
- State estate and inheritance tax11 states
CaliforniaColoradoFloridaMichiganNew JerseyNew YorkTexasVirginia