Free Invoice Calculators for Small Businesses

Use free calculators to estimate pricing, taxes, paychecks, mortgage costs, retirement savings, investment returns, concrete projects, and business…

Business & Pricing

Calculate taxes, discounts, margins, project estimates, and pricing numbers before preparing quotes, invoices, or payment requests.

Mortgage & Real Estate

Estimate home affordability, mortgage payments, refinancing, equity, rent budgets, and real estate investment returns.

House Affordability Calculator

Estimate your affordable home price, monthly…

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Rental Property Calculator

Analyze rental income, operating expenses, mortg…

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Debt-to-Income (DTI) Ratio Calculator

Calculate front-end and back-end DTI, lender-sty…

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Tax, Salary & Paycheck

Estimate income tax, payroll deductions, salary breakdowns, take-home pay, marriage tax impact, and estate tax planning numbers.

Retirement Planning

Plan retirement savings, Social Security benefits, IRA and 401(k) growth, pension income, and required minimum distributions.

Investment & Finance

Compare interest, savings growth, CD returns, bond yields, mutual funds, ROI, IRR, payback period, present value, and future value.

Compound Interest Calculator

Calculate compound interest, future value, recur…

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Payback Period Calculator

Estimate how long it takes to recover an investm…

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Present Value Calculator

Calculate today’s value of future money, annuity…

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Used by Businesses Around the World

From freelancers to growing companies, Invoize helps businesses create professional invoices, manage billing, and get paid faster.