Tools and guides to maximize your finances
No sign-up. Clear assumptions on every result.
Calculators
A number for the decision in front of you — tax, a house payment, or what hits the bank.
- Federal taxYou want a federal refund / owed estimate before you file.
- Loan paymentYou have amount, APR, and term for an auto or personal loan.
- IRA & 401(k) contributionYou are setting deferrals and need this year’s limit and match.
Playbooks
Ordered steps for a life event. Each step opens a calculator or a compare.
- TaxTax seasonEstimate federal tax, decide whether to itemize, then set withholding and retirement deferrals before year-end.
- HomeBuying a houseCap the price from income, then see the monthly payment, then check whether a refinance later would recoup costs.
This year (2026)
IRS and SSA figures stamped on the calculators. Confirm against the notice if you are filing.
Guides
Short explainers that end in a calculator — how the number is built, not advice.
- Qualified Tips Deduction — $25,000 Cap, W-2 Code TPHow the temporary deduction for qualified tips works. The $25,000 cap, MAGI phaseout, tipped occupations list, W-2 box 12 code TP, and why FICA still applies.
- Qualified Overtime Deduction — $12,500 Cap, W-2 Code TTHow the temporary deduction for FLSA overtime premium works. The $12,500 cap, MAGI phaseout, W-2 box 12 code TT, and why only the “half” of time-and-a-half counts.
- Car Loan Interest Deduction — $10,000 Cap, Who QualifiesHow the temporary deduction for interest on a new US-assembled car loan works. The $10,000 cap, first-lien and personal-use tests, negative equity, and why the tax savings are smaller than the interest you paid.