Tools
Free business
calculators.
Free calculators for everyday questions in a business with invoices, customers and more than one owner.
Split a profit between partners, find an invoice's due date, or work out a late charge at a rate you've agreed. Each calculator is free, needs no signup and runs in your browser.
Calculators
Pick a
calculator.
Owner profit
Profit split calculator for business partners
Enter a profit you've already worked out and each owner's percentage to see every owner's share. It divides the profit only — it isn't a partner balance, settlement or tax calculation.
Free · No signup
Invoice dates
Invoice due date calculator
Pick the invoice date and payment terms — Due on receipt, Net 7 to Net 90 or a custom number of days — to get the due date, counted in calendar days.
Free · No signup
Overdue invoices
Late fee calculator
Enter the overdue amount, how late it is and the flat fee or rate you agreed to see the late charge and new total. It applies your rate; it doesn't decide what you can charge.
Free · No signup
Which one?
Start from
your question.
- How do we divide this profit?
- Profit split calculator: each owner's share of a profit at the percentages you agreed.
- When is this invoice due?
- Invoice due date calculator: the invoice date plus the days in its payment terms.
- What's the late charge on this overdue invoice?
- Late fee calculator: the charge at the fee or rate in your terms, from the due date and payment date.
How they work
Simple, private
and transparent.
- Free, no signup
- Open a calculator and use it. There's no account, email or download.
- Runs in your browser
- The calculation happens on your device. What you enter isn't stored, put in the page address or sent to RecordSplit.
- Formulas shown
- Each calculator explains its formula and the conventions it uses, with a worked example you can check by hand.
- Arithmetic, not advice
- The calculators do the maths for the figures and terms you enter. They aren't tax, legal or accounting advice.
More resources
Guides and
templates.
From one-off sums
to every owner's records.
Free for your first organization. No credit card required.