Yes, once the customer has opted in, and only within caps they can see. An AI agent can move spare money from a current account into the customer's own instant-access savings, keeping a buffer for upcoming bills. Amounts must be capped, every sweep reversible in a tap, and how the agent judges "spare" is a product decision for named people.
What makes a sweep different from a savings rule?
A savings rule is fixed: move 100 on payday. The customer decided the amount. A sweep is judged: the agent looks at the balance, upcoming payments and spending patterns, and decides how much can be moved today. That judgement is the point of the feature, and also its risk.
If the agent misjudges, the customer finds money missing from their current account when a bill or card payment arrives. The money is still theirs and can be moved back, but a declined payment at a till or a bounced direct debit has already happened. The design question is how to keep the benefit of judgement while making the cost of a wrong judgement small.
What conditions decide it?
- Opt-in. The customer switched the feature on in an authenticated session, after seeing how it works and how to turn it off.
- Own instant-access accounts only. Money moves between the customer's own accounts, never into fixed-term or notice products.
- A buffer the customer sets. The current account never drops below a floor the customer chose, plus upcoming scheduled payments.
- Caps per sweep and per month. Limits the customer can see and lower.
- No sweeps during difficulty. Signs of financial difficulty pause the feature.
Our article on managing a customer's savings goals covers fixed rules. This one is about the judged version.
What may the agent do, and where must it stop?
| Action | The agent | Where it stops |
|---|---|---|
| Estimating spare money | Calculates it from balance, scheduled payments and patterns | Using data the customer has not agreed to |
| Sweeping within caps and buffer | Moves money at depth 3 | Above the caps |
| Telling the customer | Sends a notice for every sweep with an undo option | Nothing |
| Undoing a sweep | Moves the money back at once on request | Nothing |
| Pausing on difficulty signals | Pauses and tells the customer | Restarting without a review |
| Sweeping into locked products | Never | The customer chooses those directly |
| Changing how "spare" is calculated | Never | Product owners, after testing |
The calculation behind the sweep is part of the product. Changing it changes outcomes for every customer who uses it, so it belongs to the people who own the product's fairness, not to the agent on a given day.
An example: a sweep that waits
Take a customer who opts in with a buffer of 300 and a monthly cap of 400. On the 10th, their balance is 1,100. The agent reads the scheduled payments: a phone bill of 40 on the 12th and rent of 700 on the 15th. Spare money after the buffer and those payments is 60. The agent sweeps 60 and sends a notice with an undo button.
On the 20th, the balance is 900 after a refund. No scheduled payments remain this month, but the customer usually spends about 400 on groceries and fuel before payday. The agent sweeps 200, not the full 600 that the arithmetic allows, because its estimate includes typical spending. Later that week, a car repair bill arrives. The customer taps undo, and the 200 is back in seconds.
The following month, two direct debits bounce for unrelated reasons and the overdraft is used. The agent pauses sweeps, tells the customer why, and passes the signals to the support team.
What controls make it safe?
- The customer's buffer and caps as bounds. They are the customer's own limits in the minimum chain, and the agent cannot exceed them.
- Scheduled payments read first. Direct debits and standing orders come from the core banking system, sealed.
- One-tap undo. Every sweep is reversible by the customer immediately.
- Difficulty pauses. The same signals described in collections agents must spot difficulty before they ask for money stop sweeps.
- A filed verdict per sweep. The calculation, the bounds and the amount moved are recorded.
Choosing which savings product to sweep into is a separate question; see whether an AI agent can recommend a savings or loan product. The general limits are in AI agents in banking: what they may and may not do.
Where Pryme fits
In Pryme, the sweep capability is certified on replays of real account histories, where each sweep must leave every scheduled payment funded. A single bounced payment in the test set fails the run. The customer's buffer and caps enter the minimum chain as their own limits, and the verdict on each sweep names the bound that set the amount.
Questions people ask
Can the agent sweep money back if the current account runs short?
Some products offer a reverse sweep to cover a shortfall. Where the customer has opted in, the agent can move money back automatically within the same caps.
Can the agent sweep from a joint account?
Only if both holders have opted in, because money moved into one holder's savings changes who owns it.
Do sweeps earn the same interest as normal deposits?
Yes, once in the savings account the money earns that account's rate. The agent should show the rate the customer is earning.