Free tools for small business owners

Free calculators and plain-English guides for small business money decisions

Can I afford to hire? What should I charge? Is this expense worth it? Mint & Main helps you answer the money questions that keep you up at night. No jargon, no sales pitch, no account required.

Why it is free

Every calculator on this site is free to use, forever, with no signup. We keep the lights on through affiliate links: when you buy a product we recommend, we may earn a commission at no extra cost to you. It never changes what a tool tells you. You can read exactly how that works in our affiliate disclosure.

Featured tool

Calculator

S Corp vs LLC Tax Calculator

Could electing S corp status save you money on self-employment tax? Enter your profit and get an estimate, with the math shown step by step.

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Coming soon

Pricing Calculator

Set prices that cover your costs and leave room for profit, instead of guessing or copying competitors.

Coming soon

Loan Comparison Calculator

Compare the true cost of business loans and lines of credit, side by side, in plain numbers.

Guides, written in plain English

Short guides that explain small-business money topics the way you would explain them over coffee. No accounting degree required.

Coming soon

LLC vs. sole proprietorship: the costs that actually matter

Filing fees, taxes, and paperwork, compared without the legalese.

Coming soon

How to read your first profit and loss statement

What each line means and which three numbers to check every month.

Coming soon

Separating business and personal money: a simple setup

A practical starting setup that takes an afternoon, not a consultant.