Finance Calculators

Master your money with our collection of high-precision tools. From 2026 tax planning to investment projections, get the numbers you need instantly.

🏛️ Tax & Income 2026 Updated

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Income Tax Calculator

Estimate your 2026 take-home pay with Federal, State, and FICA breakdowns. Includes logic for all 50 states.

Calculate Paycheck
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Sales Tax Calculator

Find the true “out-the-door” price. Visualizes how much of your purchase goes to state and local taxes.

Calculate Price

📈 Investing & Retirement

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401k Calculator

Project retirement wealth with 2026 contribution limits ($24,500), employer match logic, and Secure 2.0 rules.

Plan Retirement
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Compound Interest

Visualize the “snowball effect” of your investments. See how daily or monthly compounding grows your wealth.

See Growth

🏠 Real Estate & Auto

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Mortgage Calculator

Calculate monthly mortgage payments including principal, interest, taxes, and insurance (PITI).

Estimate Payment
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Rent vs Buy Calculator

A sophisticated analysis of unrecoverable costs, equity, and opportunity costs to find your financial breakeven year.

Compare Options
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Home Affordability

Reverse-engineer your maximum home price based on income, debts, interest rates, and insurance costs.

Find Budget
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Car Loan Calculator

Calculate monthly car payments with trade-in values, taxes, and amortization schedules.

Estimate Payment

Precision Financial Tools

Financial decisions require absolute accuracy. A minor error in a tax calculation or an investment projection can result in significant real-world costs. At CalcTooly, we build our tools using rigorous financial formulas to ensure your data is always correct.

Understanding the 2026 Tax Landscape

The tax code changes every year. Our Income Tax and 401(k) Calculators are updated with the projected 2026 IRS brackets and limits, ensuring you aren’t planning your future with yesterday’s numbers.

The Mathematics of Wealth

Finance is more than just balancing a checkbook; it is about projecting the future. Our Compound Interest and Rent vs. Buy tools help you visualize the “Time Value of Money.” By using our simulators, you can see how consistent decisions today transform into substantial wealth tomorrow.

Privacy First

Your financial data stays yours. Our calculators run locally in your browser, ensuring that your salary, debts, and investment numbers are never stored on a server.

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