Financial Calculators for Tax, Retirement, Loans, and Planning
Our free financial calculators cover the questions clients ask before they call us: how much will my mortgage actually cost, what does an S-corp save in self-employment tax, how big does my Roth conversion need to be, what is my paycheck after New York City withholding. For Tax Calculators, there are 35 tools in this library, all built and maintained by our CPA team, all updated for 2026 contribution limits, tax brackets, and standard deductions.
The calculator gets you to a number. The number is the start of the planning conversation, not the end of it. A mortgage payoff figure doesn’t tell you whether prepaying beats funding a SEP-IRA; a capital gains number doesn’t tell you whether to harvest losses this December or wait. If a result surprises you, that’s usually a sign worth investigating — pair the tool with our tax strategy guides or browse the rest of the helpful guides library for the context behind the math.
Tax Calculators: 35 Calculators
Loans & Debt
For mortgages, car loans, business loans, credit cards, and any “what does this cost me over time” question. Each tool runs a real amortization or APR calculation rather than a quick estimate.
Federal Tax
Federal income tax estimators, self-employment tax, capital gains, paycheck withholding, and the new overtime deduction from the 2025 One Big Beautiful Bill Act.
State & Local Tax
State income tax calculators for New York, California, and Illinois, plus a sales tax calculator and property tax estimator.
Retirement
IRA, 401(k), SEP IRA, and required minimum distribution calculators with current contribution limits and tax treatment.
Real Estate Decisions
Side-by-side cost comparison for the rent-or-buy decision over a chosen planning horizon.
Savings & Planning
CD returns, future value projections, rate solvers, and budgeting tools for personal financial planning.