Want to Steal Money Legally? Start a Bank! 4 Ways Banks Drain Your Money — and the New Rules That Protect You (2026 Update)

🇹🇿 Soma kwa Kiswahili

I first wrote this article in 2020 and published it on Facebook. Six years later I have reviewed it: several figures have changed, and the Bank of Tanzania (BoT) has introduced new rules that ban some of the practices I complained about. But remember: the law only protects you if you know it.

Many years ago I read a novel by the American author Mario Puzo, famous worldwide for THE GODFATHER. Like The Godfather, this novel was about the Mafia. I think it was FOOLS DIE or OMERTÀ — I don't remember which.

One line from a character stuck with me. At a meeting of Mafia bosses, one of them was trying to persuade the others to change their methods:

“Why keep robbing with guns when there are better ways to steal — legal ones?”

“What ways?” the others asked.

“BANKS. Let's start a bank! With a bank you can steal as much as you like, and the beauty of it is that, in the eyes of the law, it's all legal!”

The idea is not new. In 1928 the German playwright Bertolt Brecht asked in The Threepenny Opera: “What is robbing a bank compared with founding a bank?”

At the time I gave the line little thought, although it stayed with me. My experience of money and banking was limited; all I knew was that a bank was a safe place to keep money, and when you needed it you went and withdrew it.

As the years passed, I understood that Mafia boss better. To be fair: not every bank does all of this, and banks have real operating costs. But there are four ways customers without financial literacy lose money to banks — all perfectly legally.

1. Low interest on your savings, high interest on your loan

Banks invite you to open a savings or deposit account with a promise of interest. Today an ordinary savings account in Tanzania pays about 3% a year. The bank lends that same money out at an average of about 15% (BoT, 2026).

Put simply: deposit TSh 1,000,000 in a savings account and you earn about TSh 30,000 a year. Lent out at 15%, that same money earns the bank about TSh 150,000. You get 30,000; the bank keeps 120,000 before its costs. No wonder Tanzania's banking sector posted a net profit after tax of TSh 2.62 trillion in 2025, up 21%.

The hidden loss: inflation and the shilling

Banks don't tell you that idle money loses value. Tanzania's inflation was 4.3% in August 2026 — the highest since April 2023, driven by transport costs. Earn 3% while prices rise 4.3%, and a year later your million buys what about TSh 987,500 buys today. You earned interest, but lost purchasing power.

Then there is the shilling: in 2020 one US dollar cost about TSh 2,300; in September 2026 it costs about TSh 2,654. For imported goods, your savings have lost nearly 13% of their value against the dollar.

2. ATM and service fees you are forced to pay

Every ATM transaction — a withdrawal, a balance check, a receipt — can carry a fee. Go to the counter instead, and some banks charge you more for “not using the ATM”.

What has changed: under the BoT Financial Consumer Protection Regulations (2025 amendment, GN 298):

• All fees, interest and charges must be disclosed before any transaction.
• Any new fee, or an increase to an existing fee, requires the BoT's prior written approval.
• Banks must publish their rates and fees every quarter in Swahili and English newspapers and on their websites.
• Maintenance fees on dormant accounts (unused for 12 months) and inactive accounts (5 months) are banned.

Take action: ask your bank for its tariff guide. If you see a fee nobody told you about, question it — and complain.

3. Flat interest: the biggest trap — and now against the rules

This is the trap that hurts borrowers most. Say you borrow TSh 20 million for 12 months at 15% (today's average).

If you repaid everything in one lump sum after 12 months, the interest would be TSh 3,000,000. But if you repay monthly, your debt shrinks every month — so the interest should shrink too (reducing balance). Unfortunately some lenders set monthly repayments but charge interest as if the full loan were outstanding until the end (flat interest).

The difference is TSh 1,338,005 — about 80% more than the interest you should really pay. (In the 2020 version I used an 18% rate: the difference was TSh 1,596,802.)

4. Paying off early, but charged interest for the full term

Say you have repaid your loan for three months, then money comes in and you decide to clear the whole debt. Some lenders will demand the interest for the remaining nine months as if you were still using their money.

In our TSh 20 million example at 15%, reducing-balance interest for months 4 to 12 is about TSh 970,557 — interest on money you are no longer using.

What you should know: BoT rules require the bank to tell you in writing, before you sign, its prepayment policy and all related costs. The bank cannot change those terms without notifying you in writing, and your collateral must be returned within 30 days of clearing the debt. Don't sign until you know: “If I pay off early, exactly what will I pay?”

A new warning: unlicensed loan apps

In 2020 the main problem was banks. Today there is another danger: mobile loan apps. Some have been reported to charge up to 18% a month and to shame borrowers. In November 2024 the BoT blocked 69 unlicensed apps, and in 2026 it has kept urging the public to borrow only from licensed lenders. Before you borrow, check the list of approved digital lenders on the BoT website (www.bot.go.tz). Debt collection through threats, harassment or false statements is prohibited.

Your rights: how to complain

• Start by complaining in writing to the bank or provider, and keep a copy.
• Complaints about loans must be resolved within 14 days; mobile money complaints within 12 hours.
• If you are not satisfied with the decision, you can escalate to the Bank of Tanzania (BoT).
• Agreements must be in Swahili or English, as you prefer. Ask for a Swahili version if you need one.

Conclusion: financial literacy is your protection

The 2025 regulations have closed some of the doors to the “legal theft” I complained about in 2020. But the law doesn't walk around in your pocket — knowledge does. If you must borrow, visit as many banks as you can, compare their Key Facts Statements, and choose the one whose terms won't hurt you.

To stop your money from leaking away, learn about money. You don't need to go to college. My digital guide, Comprehensive Guide to Personal Finance, will help you budget, save, manage debt and invest: https://payhip.com/b/Peasp

Have a question about your loan or savings? Contact Wellbiz Solutions: Phone/WhatsApp +255 754 281 131 or +255 655 281 131.

Frequently asked questions

What is flat interest?

Interest calculated on the full loan amount for the whole term, even though the debt falls every month. On a TSh 20 million loan at 15% for one year, flat interest is TSh 3,000,000 while reducing-balance interest is TSh 1,661,995.

Is flat interest allowed in Tanzania?

The BoT's 2025 amendment regulations (GN 298) require financial service providers supervised by the BoT to use the reducing balance method to calculate loan interest.

What interest does a savings account pay in Tanzania?

About 3% a year (2025/26), below inflation of 4.3% (August 2026). 12-month fixed deposits pay about 9.6%–9.7%.

What should I do if my bank charges an unlawful fee?

Complain to the bank in writing first. Loan complaints must be answered within 14 days. If you are not satisfied, take the complaint to the BoT.

This article is for public education and is not legal or investment advice. Figures are as of September 2026 and may change. No specific bank is named.

🇹🇿 Soma kwa Kiswahili