Free Tools

Financial Calculators for Service Business Owners

Free, no signup required. Built for consultants, agencies, freelancers, and other service businesses who want real numbers โ€” not guesswork.

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Profit Margin Calculator

Calculate gross margin, operating margin, and net profit with color-coded health scores benchmarked to your business type. Enter revenue, COGS, and operating expenses.

Calculate my margins
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Free

Quarterly Tax Calculator

Estimate your 2026 quarterly estimated tax payments. Covers SE tax, federal income tax, QBI deduction, and IRS due dates. Optional email delivery of results.

Calculate my taxes

Want these calculated automatically every week from your real numbers?

MarginProfitIQ connects to your actual revenue and costs, then updates your margins, tax set-asides, and health scores weekly โ€” automatically.

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