Everything a small business needs to calculate, price, plan and operate — online.
ROPA SME Toolkit exists because most small business owners don't need enterprise accounting software to answer questions like "what should I charge?" or "am I actually making money?" — they need a fast, clear, free answer.
Why we built this
Many small businesses run on manual calculations, spreadsheets, or calculators that hand back a number with no explanation. That leaves owners guessing whether the number is good, bad, or even correctly calculated. ROPA pairs every calculation with a plain-language explanation, the underlying formula, and a worked example — so you leave understanding your business better, not just holding a number.
How our calculations work
Every calculator on ROPA uses standard, transparent business formulas — the same ones taught in accounting and small-business finance courses. Each tool page shows the exact formula used and a worked example so you can verify the math yourself. Calculations run entirely in your browser; your figures are never sent to a server unless you choose to save them to an account.
Who ROPA is for
Retail shop owners, freelancers, online sellers, startup founders and service businesses — anywhere in the world. ROPA started in Dar es Salaam, Tanzania, and supports multiple currencies including TZS, USD, EUR, GBP and more, so it's useful whether you're pricing a product in Dodoma or invoicing a client in Toronto.
What ROPA is not
ROPA is not a replacement for an accountant, tax advisor or full accounting platform like QuickBooks or Xero. Think of it as the simple utility layer you reach for before your business needs — or can justify — that level of software.
Who's behind ROPA
ROPA SME Toolkit is built and maintained by Doucas Frank Miller, based in Dar es Salaam, Tanzania. The guides on this site are also written and kept up to date by the same team maintaining the calculators, so the explanations stay grounded in how the tools actually work.
Get in touch
Questions, feedback or a tool you wish existed? Reach us at hello@ropa.co.tz.