Across Africa, Asia, the Americas and the global diaspora, communities have organised themselves around the same simple idea — pooling money, taking turns, building together. We are bringing that practice into the digital age, without changing what makes it work.
A Njangi — known across the world as a Tontine, Esusu, Chama, Susu, Tanda, biāo huì, gye, or by a hundred other local names — is a rotating savings and credit association. The mechanics are deceptively simple. A fixed group of people commit to contributing a fixed amount on a fixed schedule. At each cycle, one member of the group receives the entire pot. The cycle continues until every member has had their turn.
Over the full lifetime of the circle, everyone contributes the same total amount, and everyone receives the same total amount. The economics are perfectly balanced. What changes for each member is when they receive their lump sum — and that timing is what makes Njangi powerful. For the person who receives the early payouts, it functions like a zero-interest loan. For those who receive later, it functions like a forced savings account. Everyone wins, in different ways, at different times.
It is not a financial product invented in a corporate boardroom. It is a behaviour that has emerged independently in nearly every culture that values community over individualism — from village circles in West Africa to immigrant networks in New York, from women's groups in Nairobi to merchant associations in Taiwan. The reason it persists across continents and centuries is the same in every case: it works.
Every Njangi follows the same essential rhythm: members join, contribute on schedule, and one member at a time receives the pooled funds. The illustration below shows a 5-member circle moving through one contribution period, with funds flowing into the central pot and being released to the recipient for that cycle.
5 members · €100 contribution · €500 payout per cycle · 5 cycles total
Every Njangi on Sohana follows the same five stages. The platform handles the tracking, the timing, and the transparency — so you and your members can focus on what matters: showing up for each other.
You can either start a new Njangi with friends, family, or community members — or join one that already exists. When you create a circle, you become its organiser: you set the rules, invite the members, and oversee the cycle. When you join one, you commit to contributing on the agreed schedule and trust that the organiser and platform will handle the rest fairly.
Most circles are private — only invited members can see them or join. If you want to find members beyond your immediate network, you can also create a public circle and let trusted members of the wider Sohana community apply to join.
Before the circle starts, the organiser defines the four parameters that will govern every contribution and payout: the contribution amount (how much each member puts in per cycle), the frequency (weekly, fortnightly, or monthly), the number of members (typically 3 to 12), and the payout order (drawn at random, set by the organiser, or determined by member preference).
Once the rules are set and members have joined, they cannot be silently changed. Every member sees the same agreement, the same numbers, and the same schedule. What was promised at the start is what gets delivered at the end. No re-negotiation mid-cycle, no "trust me" mechanics — just clear, enforceable rules.
When a contribution period opens, every member transfers their share into the platform's escrow. The Sohana ledger records exactly who has paid, when, and how much. Members can see the pool's progress in real time — 4 of 5 paid · €400 of €500 collected — and the organiser receives an automatic alert if anyone falls behind.
If a member is late, the platform follows up automatically with reminders. If a member is repeatedly late or fails to contribute, this affects their Njangi Credit Score (NCS) — the behavioural credential that follows them across every circle they join. Showing up reliably builds your score; missing contributions damages it. Discipline becomes data.
Once a cycle's contributions are fully collected, the platform releases the entire pool to that cycle's recipient. No confusion. No waiting on the organiser to send the money. No questions about whether everyone paid. The transfer is automatic, the audit trail is permanent, and the recipient sees the full payout land in their wallet within minutes.
The recipient still has obligations: they must continue contributing to every remaining cycle, just like everyone else. The early payout is not a withdrawal from the system — it is an advance against their future contributions, structurally guaranteed by the rules and tracked by the platform.
The circle continues until every member has had their turn to receive. At the end, every member has contributed the same total amount and received the same total amount — but each will have experienced the rotation differently. Some will have used their early payout to buy something significant; others will have built quiet savings discipline.
Once complete, the organiser and members can close the circle and start a new one with the same group, or part ways. Either way, every member walks away with their financial track record updated — months or years of on-time contributions added permanently to their NCS, ready to support future circles, partner products, and credit decisions.
A Njangi works because it weaves together four forces that, on their own, are difficult to maintain — but together create a system that has outlasted banking institutions, currency reforms, and entire empires. The platform's job is not to replace these forces. It is to make them more reliable, more transparent, and more scalable than they have ever been before.
You commit to a regular contribution and your group expects you to honour it. Saving stops being optional. The structure makes consistency easier than negotiation.
When your turn comes, you receive a lump sum that would take you far longer to save alone. For early recipients, it is effectively a zero-interest advance against their own future contributions.
Your circle is built on real relationships — friends, family, neighbours, colleagues. Showing up reliably for them strengthens both the circle and the bond between members.
The rules are clear from the start, the platform enforces them, and the audit trail proves who did what. No more "did you pay last month?" arguments.
The original mechanics of a Njangi are perfect. What was missing was the infrastructure to make it work at scale — across borders, across currencies, across years. Here is what changes when a circle moves from a notebook or WhatsApp group to Sohana.
Before you create or join a Njangi, it helps to see the numbers. Adjust the contribution amount, member count, and frequency below to see exactly what each member will receive — and how long the full cycle will take. This is the same calculation the platform applies when a circle is set up.
Every Njangi has a small set of well-defined roles. The platform makes the boundaries between them explicit, so members know exactly what they can do, what others can do, and where the lines are drawn. The clearer the roles, the smoother the circle.
The person who sets up the circle. They define the rules, invite members, and act as the first point of contact when something needs human judgment. They do not handle money — the platform does that.
Can doA regular participant in the circle. Members commit to contributing on time and receive their payout when their turn comes. Their on-time behaviour is recorded in their NCS for life.
Can doSohana itself plays the role of treasurer — the ledger, the escrow, the audit trail. No single person ever holds the group's money. The platform releases payouts only when the rules say it should.
Always doesA Njangi is not a single product with a single user. It is a coordination mechanism that adapts to what your group needs — short-term cash flow, long-term savings discipline, working capital, family coordination. Here is how different kinds of users typically use a circle.
A group of friends who want to save together for something specific — a holiday, a wedding contribution, a major purchase — without needing to chase each other for money.
Family members who want to support shared expenses — tuition, healthcare, family events — with a clear, fair system instead of ad-hoc requests for help.
Small-business owners and traders pooling working capital among trusted peers, with predictable access to the lump sum when stock or equipment needs to be bought.
Diaspora associations, faith-based groups, or alumni networks running cross-border circles where members are spread across cities and continents but share a common bond.
Create your circle, invite your people, and start saving with structure. Or join an existing circle and add to your financial track record from the first contribution.