What is a Susu? Caribbean and West African Savings Circles

What is Sou Sou?

Sou Sou (also spelled “Susu”) is a Caribbean and West African community savings practice where trusted groups of people contribute fixed amounts regularly to a collective fund. Members take turns receiving the full amount, creating a rotating credit system that enables access to larger sums without traditional banking.

Traditional Sou Sou Structure

1. 1

   Community Formation

   Trusted friends and family join

2. 2

   Regular Contributions

   Weekly or monthly fixed amounts

3. 3

   Rotating “Hand”

   Members receive full amount in turn

4. 4

   Cycle Renewal

   Process repeats until all members served

Regional Variations Across the Caribbean & West Africa

Unique Caribbean Adaptations

Modern Challenges & Adaptations

Rules the group cannot quietly change

The rules, written down

// A simplified sketch of the sou sou rules
// Every round gets its own escrow, and only that round's "hand" can collect it
struct CycleEscrow<phantom T> {
    recipient: address,          // whose hand it is, fixed when the round opens
    members: vector<address>,
    contribution_amount: u64,    // one exact amount, the same for every member
    contributed: Table<address, bool>,
    balance: Balance<T>,         // the pot
}

public fun contribute<T>(
    escrow: &mut CycleEscrow<T>,
    payment: Coin<T>,
    ctx: &mut TxContext
) {
    // Members only, once per round, the exact amount
    // The member whose hand it is does not pay into their own round
    // The whole payment goes into the pot; nothing is set aside
}

public fun finalize_and_redeem<T>(
    escrow: &mut CycleEscrow<T>,
    clock: &Clock,
    ctx: &mut TxContext
) {
    // Only the member whose hand it is can collect,
    // and only once everyone else has paid
    // They receive the entire pot, and advance_circle_after_claim
    // then moves the rotation to the next hand
}

Traditional Limitations

• Geographic Barriers

  Physical meetings, local-only membership

• Currency Exchange

  Complex remittance fees and delays

• Trust Dependencies

  Single coordinator risk, fraud potential

What changes

• Global Accessibility

  24/7 participation across borders

• One Currency

  Everyone pays in the same digital currency, so the pot never mixes currencies

• Automated Trust

  Contract rules apply equally to every member

Built for circles spread across countries

• Multi-Currency Support

  Digital dollars, so the pot holds its value across borders

• Invite by Link

  The organiser shares one link; members sign in and ask to join, and the organiser approves each one

• Automated Escrow

  The pot is held in escrow and released on schedule, to the scheduled member only

Connecting Caribbean Diaspora Communities

Global Caribbean Diaspora

Digital Platform Benefits

• Cultural Connection

  Run the same sou sou your family has always run, with members in different countries.

• Economic Empowerment

  Pooled savings for education, a small business, property purchase, and family support across borders.

• Easy Sign-In

  Relatives sign in with Google, Facebook or Apple — no seed phrase to write down and no wallet to install.

Common Uses