Where We Get Our Numbers (and How You Can Check Them)
JengaWealth teaches what official sources say, in plain language. We link numbers to their original reports and show when changing information was checked. We do not teach opinions or tell anyone what to buy.
We start with the authority responsible
Our first choice is the institution that creates, regulates or records the information.
We use these sources for different questions:
- The Bank of Tanzania for banks, payments, lenders, government-security auctions and financial regulations.
- The Dar es Salaam Stock Exchange for market reports, listed securities and exchange information.
- The Capital Markets and Securities Authority for Tanzania capital-market licences, rules and public warnings.
- The Tanzania Insurance Regulatory Authority for insurers, insurance intermediaries and insurance rules.
- BRELA for company and business-name registration records.
- The National Bureau of Statistics for national surveys, crime statistics and economic data.
- FinScope Tanzania 2023 for how Tanzanian adults access, understand and use financial services.
We may use reputable Tanzanian news organisations for context or a named official’s comments. We do not use a news story as the final source for a fee, rate or licence status when the primary record exists.
How we check a number before publishing
We open the original document and identify its reporting period. We check the table, unit, definition and population covered. We then write the source and period beside the number, so readers do not mistake old data for a live figure.
Context matters. “Reported fraud cases” does not mean every fraud incident. “Attempted fraud” is not the same as money lost. An auction result from one date is not a promised future return.
We also redo simple arithmetic. The NBS crime report for 2024 records the following amounts:
| NBS 2024 financial-fraud data | Amount |
|---|---|
| Reported amount stolen | 5,345,019,866 TZS |
| Amount recorded as recovered | 254,085,600 TZS |
| Difference | 5,090,934,266 TZS |
The recovered amount is about 4.8% of the reported stolen amount. That percentage describes the national dataset, not what one victim will recover.
When recurring figures were last checked
“Last checked” means we reopened the linked source on that date. It does not change the period measured by the source.
| Recurring figure | Source period | Last checked |
|---|---|---|
| 5.345bn TZS reported stolen; about 4.8% recovered | NBS report, January–December 2024 | 6 August 2026 |
| 69 digital lending applications prohibited | BoT notice dated 21 November 2024 | 6 August 2026 |
| 17,152 mobile-network frauds and attempts; 33% quarterly rise | TCRA report, January–March 2025 | 6 August 2026 |
| About one in ten adults aware of formal investments such as bills, bonds, shares or unit trusts | FinScope survey, March–April 2023 | 6 August 2026 |
| 56% demonstrated division skills | FinScope survey, March–April 2023 | 6 August 2026 |
The last line prevents a common reversal. FinScope reports that 56% demonstrated division skills in 2023. It does not say 56% failed the division assessment.
What we do not do with evidence
We do not turn a past rate into a promise. We do not call a licensed provider “best”, because a licence is permission rather than a recommendation. We do not hide risk or present a hypothetical example as a real customer’s result.
JengaWealth is not licensed to provide investment advice and does not provide it. Education explains how something works and what to check. A personal instruction to buy, sell or choose a provider would be advice.
We also do not sell, share or pass on reader details. Information sent with a correction should only be used to examine and answer that correction.
How to report a mistake
Send the page URL, the exact sentence, your proposed correction and the original source through our contact page. Do not include account passwords, PINs or unnecessary personal records.
We will reopen the source and check the context. If the page is wrong, we will correct it, update its visible review date and note a material change where readers could otherwise be misled. A quiet spelling fix does not need a correction note.
What you can check yourself
- Open the link beside the claim, not a screenshot of it.
- Check the document date and the period the figure covers.
- Confirm whether the number is an amount, percentage, rate or count.
- Look for definitions and notes below the source table.
- For a provider, search the live regulator register by exact legal name.
- Read Who Regulates What before choosing a register.
Frequently asked questions
Does JengaWealth give financial advice?
No. We explain official information and practical checks. We do not tell readers what to buy, sell or choose.
Why can two official numbers differ?
They may cover different dates, populations or definitions. We identify those differences instead of combining figures that measure different things.
Do you change an official number to make it simpler?
We may round a number in a headline, but the exact amount and source appear in the article. We do not change the underlying meaning.
How often are changing figures reviewed?
Rates, fees, registers and rules are checked when an article is prepared or updated. Each relevant page shows its last-updated date.
Last updated: August 2026.