CHAPS
CHAPS (Clearing House Automated Payment System) is the UK's real-time gross settlement system for high-value and time-critical sterling payments, processed individually and settled the same day.
How it works. Unlike batched rails, CHAPS settles each payment individually and in real time across accounts held at the Bank of England — "gross settlement" meaning payments are not netted against one another but move one by one, with immediate finality. There is no upper limit on value, which is why CHAPS is the default rail for large, important transfers. Once a CHAPS payment is made, it is final and irrevocable, which is precisely the assurance high-value transactions require.
Where it's used. CHAPS is used where certainty and same-day settlement matter more than cost: property purchases (paying for a house completion), high-value business-to-business settlements, tax payments, and time-critical treasury movements. Because each payment carries a higher cost than a Faster Payment or a Bacs entry, CHAPS is reserved for cases where its speed and finality justify the fee. Solicitors, corporates and financial institutions are among its heaviest users, precisely because the transactions they handle are large and cannot afford to fail or be delayed.
Where it fits. CHAPS sits alongside Faster Payments and Bacs as one of the three pillars of UK payments: Bacs for planned, recurring and bulk payments; Faster Payments for near-instant everyday transfers; and CHAPS for high-value, same-day certainty. It is operated as part of the UK's regulated payments infrastructure under the Bank of England, which gives it the reliability and finality that its role demands. Most organisations reach for CHAPS only for the specific transactions that need it, using cheaper rails for everything else. Its role is narrow but essential: when a payment simply cannot fail or wait, CHAPS is the rail that guarantees it.