Free calculators and reference guides for founders and finance teams at growing companies. No sign-up needed, and nothing you type leaves your browser.
Free calculators and checkers
Catch-up bookkeeping cost calculator
Estimate the one-time flat fee to get behind books current, from three questions about months, transactions and accounts.
1099 checker
See whether a contractor payment made in 2026 needs a 1099 under the new $2,000 threshold, and when it is due.
Delaware franchise tax calculator
Compare both Delaware methods and see the lower franchise tax due March 1, 2027. Built for startups.
Sales tax nexus checker
Find out which states you need to register in, using every state’s current economic nexus threshold. Built for ecommerce and SaaS sellers.
State income tax nexus checker
See where your company may owe state income, franchise or gross receipts tax, with every state’s bright-line test.
Quarterly estimated tax calculator
Work out the federal estimated payments that keep you inside the IRS safe harbor, with this year’s due dates.
Cash runway calculator
See your net burn, months of runway and the month cash would run out, with revenue and cost growth built in.
S corp tax savings calculator
Compare self-employment tax as an LLC with payroll taxes on a reasonable salary as an S corp, after the extra running costs.
State tax guides
Sales tax guides for remote sellers in California, Texas, Florida, New York and Illinois, and income tax guides for California, New York and Texas.
Guides and articles
For step-by-step guidance on bookkeeping, month-end close, tax deadlines and business structure, browse our accounting insights.
Want these numbers done for you every month?
Our CPA-led team runs bookkeeping, the month-end close and controller reporting for ecommerce, SaaS and AI companies.