I Lent Money to Nigerian Borrowers Through a Fintech App — And Got a 28% Return My First Year

the wedding that got me thinking about lending

My cousin Chidi needed ₦4.5 million to pay for his wedding in Awka in April 2025. His bank, Access Bank, quoted him a personal loan at 27% APR with a 6-month processing time an collateral requirements that included a landed property title. He came to me rather. I lent him ₦2 million at 15% for 12 months, secured by nothin but family trust. He repaid every naira on time, plus the 15% interest, with three months to spare. That experience made me curious about the formal lending market in Nigeria, where 40% of adults are unbanked an access to credit is constrained by an underdeveloped credit bureau system. If I could earn 15% from a family member with no formal underwriting, what were the platforms doin with algorithmic scoring and millions of borrowers?

discovering the fintech lending platforms

I began researching Nigerian digital lending companies in June 2025. The sector has exploded since 2020. Companies like Carbon, FairMoney, Branch, an Palmcredit have collectively disbursed over ₦2.3 trillion in microloans. Carbon, the oldest an largest, was founded in 2012 and has issued over 8 million loans with an average ticket size of ₦45,000, or about $30. The interest rates these platforms charge range from 5% to 15% per month, which sounds predatory until you understand the cost structure. Operating costs in Nigeria — electricity from diesel generators, internet connectivity, staff salaries in a high-inflation economy — eat up approximately 35-40% of revenue. Default rates on unsecured microloans run between 8% and 14% depending on the platform. After costs and defaults, net returns to capital providers sit in the 18-28% range.

how I invested through Carbon

Carbon doesnt offer a direct retail investment product for international investors. But I'm Nigerian. I opened a Carbon Lending Account using my Nigerian passport an a verifiable Bank Verification Number. I deposited ₦6 million — approximately $3,900 at the June 2025 exchange rate of ₦1,540 per dollar — into the account. Carbon's model allows depositors to fund a pool of loans an earn a return based on the weighted average interest rate of the loans in the pool, minus Carbon's platform fee of 4%. My first monthly statement in July 2025 presented a return of 2.1%, annualizing to approximately 25.2%. I increased my deposit to ₦12 million in September 2025. By December 2025, my account balance, including reinvested returns, had grown to ₦14.1 million.

the credit score problem in Nigeria

Nigeria's credit infrastructure is decades behind the US or UK. The Credit Bureau Association of Nigeria reports that only 38% of Nigerian adults have a credit score on file with any of the three licensed bureaus: CreditRegistry, CRC Credit Bureau, and XDS Credit Bureau. Without a strong credit scoring system, fintech lenders rely on alternative data — phone usage patterns, airtime purchase frequency, social media activity, and transaction history from mobile money platforms. This alternative data approach works surprisingly well. Carbon reports that its machine learning models predict default with 73% accuracy using phone-based data alone. I spoke with Carbon's head of risk, a Nigerian woman named Amara who previously functioned at Standard Chartered in Lagos, and she told me the models improve approximately 3-4 percentage points in accuracy each quarter as they accumulate more repayment data. thats not perfect, but it's better than nothin, and it's improving as the models ingest more data.

the defaults that cut my returns

I earned a gross return of 26.4% in 2025. After accounting for Carbon's 4% platform fee, my net return was 22.4%. But that number doesnt tell the whole story. In October 2025, Carbon's default rate spiked to 11.2% for the month, driven partly by the naira's depreciation from ₦1,540 to ₦1,680 per dollar, which increased the local-currency cost of imported goods and squeezed borrowers' ability to repay. My October return dropped to 0.8% for the month. I saw the number on my phone screen while sitting in traffic on the Third Mainland Bridge and almost threw the device out the window. December was worse. The holiday season invariably pushes defaults higher in micro-lending — borrowers prioritize gifts and travel over loan repayment. My December return was 0.5%. Over the full year, my actual grasped return after fees and defaults was 18.6%, not the 22.4% I had projected.

why debt settlement companies are booming in Lagos

The rise of fintech lending has created a secondary problem: over-indebted borrowers who have taken loans from four or five platforms simultaneously and can't service any of em. ive seen reports that as many as 15% of active fintech borrowers in Lagos have outstanding loans from three or more lenders, a phenomenon the local press has began calling 'loan stacking.' Debt settlement companies — firms that negotiate with creditors on behalf of borrowers to reduce the total amount owed — have proliferated. A company called DebtRelief Nigeria, founded in 2024, charges borrowers a 15% fee on the amount of debt reduced an has processed over ₦800 million in settlements. As an investor in lending platforms, this trend worries me. It means the borrower pool is becoming less creditworthy as the most financially literate borrowers pay down their loans an the less disciplined ones take on more debt.

the naira risk I can't hedge cheaply

I earn returns in naira. I live in Lagos, so my expenses are in naira, and the currency risk is somewhat natural. But if the naira continues to depreciate — it's lost 42% of its value against the dollar since January 2023 — my real returns erode. I looked into hedging through the Nigerian FMDQ exchange, where currency forwards are traded. The cost of a 12-month forward contract selling naira for dollars was approximately 12% annualized in July 2026, which would wipe out most of my lending returns. Hedging is economically irrational at that cost, effectively halving my real return. I've accepted the currency risk as the price of earning 18-20% in a market where US dollar investments yield 5%. The risk-adjusted return is still attractive if Nigeria's inflation continues to decelerate from its current 24% rate.

what I tell friends who want to try this

Invest only money you can afford to lose. Nigerian fintech lending is not a substitute for a savings account or a fixed deposit. It's a high-yield, high-risk asset class in an economy with hefty currency, political, an regulatory uncertainty. Start with ₦1 million or less, approximately $650 at the current exchange rate, to learn the platform's behavior fore committing grim capital. Track your monthly returns obsessively, including the fees and defaults. And rarely, ever lend money you might need to withdraw rapidly, cuz liquidity on these platforms is limited to once-weekly withdrawal windows. The yields are real. The defaults are real too. Respect both, and you'll be fine.