Free Online Tools for Small Business Owners

AI-powered tax document analysis with deduction discovery and withholding optimization

Estimate Airbnb rental income and profitability

Calculate Amazon FBA fees, profit margins, and ROI across 15 product categories with size tier breakdowns and price sensitivity analysis

Generate detailed loan amortization schedules showing principal, interest, and balance for each payment

Calculate the true Annual Percentage Rate including fees, points, and closing costs for any loan

Calculate monthly car payments, total interest, and amortization

Calculate boat loan payments and total ownership costs including insurance and storage.

Calculate business loan payments for Term Loans, SBA 7(a), Lines of Credit, and Equipment Financing

Calculate capital gains tax on investments and property

Calculate cryptocurrency mining profitability for 5 coins (BTC, ETH, LTC, DOGE, XMR) with electricity costs, ROI timeline, and break-even analysis

Calculate cryptocurrency investment returns, profits, and ROI including fees and tax estimates

Calculate cryptocurrency taxes on trades and transactions

Compare current debts vs a consolidation loan

Calculate eBay seller fees across 14 categories and 5 store tiers including insertion, final value, promoted listings, and international fees

Calculate Equated Monthly Installments for any loan with amortization schedule and prepayment analysis

Estimate federal and state estate tax on an inheritance

Calculate Etsy seller fees including listing, transaction, payment processing, and offsite ad fees with profit margin analysis

Calculate home equity, HELOC borrowing power, and loan payment estimates

Calculate profit and ROI on a house flip project

Estimate US federal income tax with brackets, FICA, and take-home pay

Compare LLC vs S-Corp tax savings with side-by-side analysis, self-employment tax breakdown, and optimal salary sensitivity chart

Calculate monthly payments, interest, and amortization schedules

Calculate profit margin, markup, and selling price with batch analysis and industry benchmarks

Calculate mortgage payments with taxes, insurance, PMI, and amortization

Calculate your net income after federal, state, and local taxes with detailed deduction breakdown

Calculate take-home pay with federal tax, FICA, state tax, and deductions

Calculate how fast you can pay off debt with extra payments and see total interest savings

Calculate federal, state, Social Security, and Medicare taxes with detailed net pay breakdown

Calculate personal loan payments and total interest

Calculate gross and net profit margins with markup comparison

Calculate property taxes with exemptions and multi-year projections

Calculate quarterly estimated tax payments with federal + state taxes, safe harbor rules, and payment deadlines for all 50 US states

Calculate return on investment, annualized ROI, and compare investments

Calculate monthly RV loan payments with term comparison and total interest.

Calculate sales tax for any US state with multi-item and reverse modes

Calculate self-employment tax and quarterly estimated payments

Calculate Shopify store profitability across 4 plan tiers with payment processing fees, shipping costs, and break-even analysis

Calculate real estate transfer taxes, title insurance, and closing costs by state

Calculate stock option values for ISO, NSO, and RSU grants with AMT exposure analysis, vesting timeline, and exercise strategy comparison

Calculate stock investment returns including dividends, capital gains, and after-tax performance

Calculate student loan payments with Standard, Graduated, and Income-Driven repayment plans

See which tax brackets your income falls into with effective rate

Calculate federal tax withholding per paycheck and estimate your refund or amount owed

Convert between px, rem, em, pt, and other CSS units

Build and test cron expressions visually with human-readable descriptions and next run times

Create professional invoices and download as PDF