Sources

Every figure in the calculators traces to published guidance. This is the full list.

Overtime deduction rules, caps and phase-out

Last verified September 18, 2026.

Federal tax brackets, 2026

Last verified September 18, 2026.

Standard deduction, 2026

Last verified September 19, 2026.

Mortgage recast: fees, minimum lump sums and loan-type eligibility

Last verified September 19, 2026. These are published lender guides, not a legal or agency source. Recast availability, fees and minimums are set by each servicer.

How often figures are checked

Figures are re-checked against these sources at the start of each tax year, and whenever the IRS publishes a change. See themethodology page for how they are used.