ChamaMa

The problem

Every month, your treasurer spends hours reconciling spreadsheets. Members don’t trust the numbers. Loans go missing. You argue about who owes what. One person leaves and the records go with them.

What ChamaMa does

Every transaction in your chama runs through a double-entry ledger at the core. Contributions, withdrawals, loan disbursements, repayments, interest—each one posts to both sides and keeps the books perfectly balanced. Members log in and see their real balance, loan history, contribution record. The treasurer can’t lose the records when they leave.

What you get

Real-time ledger. Enter a contribution once and every member’s balance updates automatically. No more recording the same transaction three places and then arguing about whose numbers are right.

Members can see their own accounts. They log in and see their balance, how much they’ve contributed, what they’ve borrowed, when payments are due. You stop getting “how much do I have?” calls.

Automatic calculations. Set the interest rate once, set the withdrawal rules once, set voting requirements once. ChamaMa handles all of it. No manual recalculations every week.

Grow at your own pace. Start with just member tracking and savings. Add loans later, add interest tiers later. Don’t get forced into complexity you don’t need yet.

Engineering challenge

Every transaction is a ledger posting—contributions, loans, repayments, member fees—and the system has to enforce that every posting balances and every member’s balance stays mathematically correct, including under concurrent transactions. The system is multi-tenant (each chama isolated), with role-based access for admin, treasurer, and auditor.

Scales from 5-member chamas to 100+ member SACCOs. Feature tiers unlock as groups grow: start with savings, add loans and interest later.

What this proves

Building a financial system? ChamaMa is our proof: ledger integrity, reconciliation, and auditability, running with real member money today.

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