What is a san? How rotating savings clubs work
A san — also called a tanda or savings club — is a group of people who each put in the same amount on a schedule and take turns receiving the whole pot. Here is how it works, with a full example.
Last updated: October 2, 2026
A san is one of the oldest ways to save money in a group. A handful of people who trust each other agree to put in a fixed amount on a regular schedule, and every time they do, one of them takes home the full amount collected. The group keeps going until every member has had a turn.
There is no bank in the middle, no interest and no paperwork beyond what the group decides to keep. That simplicity is why the same idea exists all over the world under different names — and it is also why the group has to be organized well for it to work.
The basic idea
Before starting, the group agrees on three things:
- The quota: how much each member puts in every cycle.
- The schedule: how often the group pays — every week, every two weeks or every month.
- The turns: the order in which members receive the pot.
Every cycle, all members pay their quota and the member whose turn it is receives everything that was collected. A club with ten members has ten turns, so it lasts ten cycles. When the last member receives the pot, the club is finished. Many groups then start a new round.
A complete example
Ten people start a club with a quota of $100 a month. Every month the group collects 10 × $100 = $1,000, and one member receives it.
| Month | Each member pays | Pot collected | Who receives it |
|---|---|---|---|
| 1 | $100 | $1,000 | Member with turn 1 |
| 2 | $100 | $1,000 | Member with turn 2 |
| 3 | $100 | $1,000 | Member with turn 3 |
| … | $100 | $1,000 | … |
| 10 | $100 | $1,000 | Member with turn 10 |
By the end, every member has paid $100 × 10 months = $1,000 and has received $1,000 exactly once. Nobody earns anything and nobody loses anything. What changes from member to member is when the money arrives: the first turns receive it early and keep paying afterwards, the last turns save for the whole club and receive at the end.
Why people use it
- It forces the habit of saving. Skipping a month means letting down people you know, which is a stronger reason to pay than a reminder from an app.
- It gives access to a lump sum. A member with an early turn gets the full pot long before they could have saved it alone, without asking a lender for it.
- It needs nothing but the group. No account to open, no credit history, no minimum balance.
- It is easy to understand. Everyone puts in the same and gets back the same.
What a san is not
- It is not a bank account. The money is not held by a bank and is not protected by deposit insurance.
- It is not an investment. Nobody receives more than they put in, and anything that promises you will is something else.
- It is not a loan from a company. It is a private agreement between the members, and it is only as solid as their commitment to keep paying.
That last point is the heart of it. The club works because every member commits to paying the quota until the club ends, including after they have already received their turn.
One idea, many names
Economists call this a rotating savings and credit association, or ROSCA. In everyday life it has local names, among others:
- San — Dominican Republic and Venezuela.
- Tanda or cundina — Mexico.
- Junta or pandero — Peru.
- Cadena — Colombia.
- Polla — Chile.
- Cuchubal — Guatemala and El Salvador.
- Sociedad — Puerto Rico.
- Susu or sou-sou — West Africa and the Caribbean.
- Partner — Jamaica.
The details vary from group to group, but the mechanics are the ones described above.
Who does what
Most clubs have one organizer — the person who brings the group together, keeps track of who has paid, and makes sure each turn is paid out on time. The other members have a simpler job: pay the quota on the agreed date and keep proof that they did.
Traditionally all of this is tracked by hand in a notebook, a spreadsheet or a group chat, and that is where most problems start: a payment nobody wrote down, a date that two people remember differently, a receipt lost in a long conversation.
Where SanSavingClub fits
SanSavingClub replaces the notebook. The organizer creates the club with its quota and schedule, members join with an invite code, and each payment is reported with its amount, date, method and an optional receipt. The organizer approves it, and everyone can see the calendar of due dates and turns.
SanSavingClub only keeps the record. It does not hold or move the money — members pay each other directly, by whatever method the group agrees on.