Coverage and verification

Know the boundaries

PaySpect is a prerelease planning tool, not a tax-return preparer or payroll service. It does not submit forms, change employer payroll, or make payments. A saved withholding plan must still be applied with your employer.

State estimates require a confirmed single-state resident household. Multi-state allocation, part-year/nonresident returns, AMT, NIIT, capital-gain tax rates, EITC, detailed itemization, and full underpayment-penalty calculations are not modeled. Benefit and deduction eligibility require your confirmation. Missing coverage means unknown tax, not zero.

Only the years below ship. Future years are unsupported until their packs are added and verified. No wage-income withholding does not mean no other state taxes; payroll programs and local taxes depend on each pack.

Selected executable evidence

California DE 44 (2026), Method B examples A–F · Rev. 52 (4-26), pages 43–45

The engine annualizes the published annual tables. Examples C and D use rounded per-period tables and differ by two cents; E and F use the publication's annualized method. These are selected regression examples, not a claim that every possible paycheck matches to the cent. This page’s build fails if the engine drifts from the pinned expected results.