Why we built it
The everyday calculations behind a small business are not complicated, but they are easy to get wrong. Margin gets confused with markup, tax gets subtracted instead of divided, and a discount quietly removes more profit than intended. Spreadsheets help until they are out of date, and full accounting software is more than the question requires.
Tavli One takes the opposite approach: one clear tool per question, with the formula shown, a worked example, and an explanation of the result. Nothing is hidden behind a sign-up, and the arithmetic happens in your browser.
What is included
Phase 1 includes ten calculators and four document generators:
- Profit, profit margin, markup, break-even, VAT, discount, loan, ROI, commission and freelance hourly rate calculators.
- Invoice, quotation, receipt and proforma invoice generators with live preview, PDF download and print.
- Practical guides explaining the calculations behind the tools.
Accounts, saved records, payment tracking and subscription features are planned for a later phase. They are deliberately not part of this release, so the tools that exist can stay simple and free.
How we make money
The free tools may be supported by clearly labelled advertising on some pages. Ads never interrupt a calculation or a document download, and we do not sell personal data. If advertising is not enough to cover costs, a paid workspace will be introduced for people who need saved records — not by charging for the calculators.
What we are not
Tavli One is not an accountant, a tax adviser or a lawyer. The tools provide estimates and documents based on the figures you enter. They do not know your jurisdiction, your tax status or your obligations. For decisions with financial or legal consequences, confirm the position with a qualified professional.