Chama share-out calculation

Share-out day is when a year of record-keeping gets audited by nine people at once. The maths is simple; the arguments come from bad books. Here is the standard method, worked end to end in shillings.

Settle these before you calculate anything

1. Reconcile the account. Your records must match the actual bank/M-Pesa balance to the shilling. If they don't, stop and fix that first — everything below is wrong otherwise.
2. Collect outstanding loans (or carry them forward against that member's share).
3. Settle unpaid fines.
4. Pay any expenses still owed.

What's left is the pot you're splitting.

The method: proportional to contributions

The fairest and most common method pays each member back their own savings, then splits the profit in proportion to what each person contributed. Members who put in more, and therefore carried more of the fund, earn more.

Step 1 — Find the profit:

Profit = Total fund today − Total member contributions

Step 2 — Find each member's share of the profit:

Member's profit share = Profit × (Member's contributions ÷ Total contributions)

Step 3 — Their payout:

Payout = Member's contributions + Member's profit share − anything they still owe

Worked example

A chama of 4 members ends the year. Total contributions are KES 480,000. Loan interest and other income grew the fund to KES 528,000. So:

Profit = 528,000 − 480,000 = KES 48,000

Each member's profit share is 48,000 × (their contributions ÷ 480,000):

The payouts sum exactly to the fund. That check is the whole point — if your total payout doesn't equal the money actually in the account, you have an error, not a rounding quirk.

If Brian still owed KES 5,000 on a loan, his payout becomes 105,600 − 5,000 = KES 100,600, and that 5,000 stays in the pot.

Other methods (and when they apply)

• Equal split: only fair if every member contributed exactly the same for the whole cycle. Most chamas think this applies to them and it usually doesn't — someone joined late or missed months.
• Time-weighted: weights money by how long it sat in the fund. Fairest when members joined at very different times, but harder to compute and explain.
• Partial share-out: pay out profits only and roll savings into the next cycle. Popular with investment chamas that don't want to restart from zero.

Whichever you use, it must be the one written in your constitution — decided long before share-out day, not on it.

The mistakes that cause fights

• Calculating before reconciling the bank balance.
• Forgetting to deduct outstanding loans or fines.
• Contribution records that members dispute — the real root cause. If the ledger was named, dated and visible all year, nobody argues on share-out day.
• Rounding each share independently until the total no longer matches the account.

This is why transparent records matter all year, not just in December. See how to run a chama, or use chamalog — it keeps double-entry books and calculates share-out to the shilling, while your money stays in your own account.