All calculators
Twelve precision calculators spanning veterans benefits, federal retirement, estate settlement, UK and US immigration, Social Security, and personal tax. Every tool runs entirely in your browser — your inputs never leave your device.
Veterans Benefits
VA disability ratings, pensions, and Aid & Attendance benefits calculators built around the VA's official combined-ratings table.
VA Combined Disability Rating Calculator
Calculate your combined VA disability rating using the official VA combined-ratings table (38 U.S.C. § 1114). Supports bilateral factor, multiple conditions, and final percentage rounding.
OpenVA Pension & Aid and Attendance Calculator
Estimate your VA pension and Aid & Attendance benefit under the MAPR limits, including IVAP and dependents adjustments.
OpenFederal Employee Retirement
FERS pension projections, TSP growth scenarios, and CSRS comparisons for federal employees planning retirement.
Estate & Probate
State-by-state probate fee and timeline estimators, plus inheritance tax and estate tax calculators.
UK Immigration
Continuous-residence trackers for UK Indefinite Leave to Remain under the 5-year and 3-year routes.
US Immigration
Naturalization physical-presence calculators, visa bulletin tracking helpers, and citizenship timelines.
Retirement & Social Security
Social Security benefit estimators, Medicare IRMAA calculators, RMD calculators, and 401(k) contribution planners.
Social Security Retirement Benefit Calculator
Estimate your Social Security retirement benefit at ages 62, FRA, and 70 using your PIA, AIME, and bend-point formulas.
OpenSSDI Benefit Calculator
Project your Social Security Disability Insurance (SSDI) monthly payment based on your earnings record and SGA limits.
OpenRequired Minimum Distribution (RMD) Calculator
Compute your required minimum distribution from traditional IRAs and 401(k)s using the IRS Uniform Lifetime Table and SECURE 2.0 age rules.
Open401(k) Contribution Calculator
Model your 401(k) growth with employer match, catch-up contributions, and tax savings using 2025 IRS contribution limits.
OpenTax & Family
Child Tax Credit calculators, federal tax bracket estimators, and mortgage payoff planners.
Mortgage Payoff Calculator
See how extra payments shorten your mortgage and cut total interest. Compare biweekly, lump-sum, and monthly overpayment strategies.
OpenChild Tax Credit Calculator
Calculate your 2025 Child Tax Credit (CTC) and Additional Child Tax Credit (ACTC) refundable portion, including phase-out thresholds.
OpenRead the explainer behind every calculator.
Each tool ships with a long-form article that explains the underlying statute, regulation, or formula — so you understand the answer, not just the number.