An ajo is a savings group. A fixed number of people who know each other each put in the same amount every week or every month. Whoever’s turn it is that round takes the whole pot. When every member has taken the pot once, the cycle is finished. The word is Yoruba; elsewhere in Nigeria the same thing is called esusu, and the Hausa word is adashe.
How the ajo is run
A group is usually ten or twelve people. Everyone agrees the same contribution, say £100 a month for a group in the UK, and the same schedule. On payment day each member hands her share to one trusted person, sometimes called the alaajo or the iya ajo. She collects, counts, and passes the pot to whoever is up.
Positions are chosen at the start. A few groups draw them by lot; most agree them, so whoever needs the money on a specific date takes the position that lands then. School fees in September, a wedding in November, a ticket home in December. Weekly ajos run in market groups; monthly ones in churches, offices and diaspora WhatsApp groups.
What it actually costs
Among friends, the alaajo does not take a fee, though she may get a small gift at the end. The ajo pays no interest either.
The real cost is which position you take. If you are first in the queue, you get a lump sum straight away and pay it back in instalments over the rest of the cycle. That is an interest-free loan from the group to you. If you are last, you have paid in every month and only get your own money back at the end. That is an interest-free loan going the other way.
The money does not grow, and inflation nibbles at it while the cycle runs. What you get is a lump sum on a date agreed in advance, and a savings habit you cannot slip out of. For a household aiming at one specific expense, that is often worth more than the interest a savings account would pay.
What happens when it fails
Ajos fail in a small number of specific ways, and anyone who has been in a few has seen at least one.
The alaajo disappears with the pot. Rare in a group who go to the same church, not rare in a group formed on WhatsApp with strangers.
A member takes an early position, then stops paying once she has been paid. The group covers her missing contributions, or someone near the end gets a short pot.
Two people want the same month because one person’s plans changed. Long-running groups handle this quietly; new groups often do not.
Death, illness, job loss and immigration changes break ajos too. A member who moves country halfway through owes money she may not be able to send.
None of these are exotic risks. They are the everyday risks of any group of people holding one another’s money.
What UK law says
A rotating savings group run among friends, where nobody takes a fee for running it, is not a regulated financial activity in the UK. The Financial Conduct Authority regulates payment services and money-transfer businesses when they are run as a business. A group of friends pooling money with no organiser fee does not meet that test.
Two things follow. First, if the ajo collapses the money is not covered by the Financial Services Compensation Scheme (FSCS), which protects savings at a UK-authorised bank, building society or credit union up to £120,000 per person per firm. There is no regulator to complain to and no compensation to claim. Your recourse is between you and the group.
Second, the ajo is legal. The Bank of England Museum ran an exhibition on the Caribbean version, the pardner hand, in 2023 and 2024. This is not a grey system in the UK; it is an unregulated one.
That picture only holds while nobody runs the ajo as a paid service. If a person or an app takes a percentage of each pot, or charges a monthly fee, they are running a money-service business, and FCA authorisation and HMRC anti-money-laundering rules apply to them. If someone in a Facebook group is offering to run an ajo for a fee, ask which register they are on before you send money.
When an ajo is the right tool, and when it is not
An ajo is the right tool when a household needs a specific lump sum on a specific date, and trusts a specific group of people to save alongside. Rent deposits, school fees, tickets home for a family funeral, working capital for a small trader: any expense with a date on it. It is one of the money systems families running between two economies use alongside formal banking, not against it.
It is not the right tool when losing the pot would break the household. Keep the emergency fund in an FSCS-protected account.
It is not the right tool on a WhatsApp group of strangers offering “double your money in six months.” That is not an ajo. That is a Ponzi scheme wearing an ajo’s clothes.
The plain test is your mother’s. Do you know these people? Do they know each other? Does the person holding the money live at an address you could actually go and knock on? If any answer is no, the ajo is not the right tool for you.