United States Calculators

Calculate your US self-employment tax (Social Security + Medicare) based on your net earnings, including the 92.35% taxable base and deductible half.

Estimate your income tax using current tax brackets and deduction values.. Free online, browser-based tool with instant results and no signup.

Calculate your estimated quarterly tax payments to avoid underpayment penalties. Perfect for freelancers and small business owners.

Estimate take-home pay after federal taxes, state taxes, and payroll deductions for hourly or salary income.

Estimate federal withholding on bonuses using percentage and aggregate methods, plus state tax impact.

Estimate short-term and long-term capital gains tax based on holding period, basis, and filing status.

Estimate effective and marginal tax rates by income level and filing status.. Free online, browser-based tool with instant results and no signup.

Estimate underpayment penalties for quarterly taxes using projected payments and annual liability.

Estimate deductible self-employed health insurance premiums and taxable income impact.

Quickly estimate total annual tax burden for freelance and 1099 income.. Free online, browser-based tool with instant results and no signup.

Estimate your annual property tax based on home value, state, assessment ratio, and homestead exemption.

Estimate your home office deduction using simplified and actual expense methods for side businesses and self-employment.

Compare estimated tax outcomes across LLC, S-Corp, and sole proprietor structures using your projected income.

Estimate a reasonable owner salary and distribution split for S-Corp planning and tax projection.

Calculate depreciation schedules using MACRS methods by asset class and in-service year.

Estimate Section 179 deduction limits and first-year write-off potential for business equipment.

Estimate qualified business income deduction with income thresholds, filing status, and business type inputs.

Calculate weighted and unweighted GPA from your courses. Supports 4.0 and weighted 5.0 scale for AP/Honors classes.

Calculate VAT (Value Added Tax) for any country. Add or remove VAT from any amount with country-specific rates.

Convert between 60+ world currencies with live exchange rates. Supports USD, EUR, GBP, JPY, and currencies from every continent.

Calculate gross margin, operating margin, and net profit margin from your revenue, COGS, and operating expenses.

Create professional invoices instantly. Add line items, tax, discounts, and download as PDF — no signup required.

Calculate your ideal hourly or project rate based on your desired salary, expenses, taxes, and billable hours.

Find out exactly how many units you need to sell or revenue you need to generate to cover your costs.

Calculate return on investment, net gain, and ROI percentage for projects, marketing campaigns, or purchases.

Convert between markup and margin percentages instantly. Calculate selling price from cost and desired profit.

Calculate sale prices, discount percentages, double discounts, and original prices. See why stacked discounts aren't additive.