What Direct Debit actually is, how the three-day Bacs cycle works, what it costs, and when it beats cards — the guide for UK businesses that collect money on a schedule.
Direct Debit is the UK’s pull-payment rail, run over Bacs. Your customer signs a mandate once — authorising you to collect — and from then on you collect what’s owed on the schedule you set, with advance notice to the payer each time. It powers most of the country’s bills, subscriptions and B2B collection because it’s cheap, it doesn’t expire like a card, and it can’t be “declined at the till”.
Bacs runs on a three-working-day cycle: the collection file is submitted on day one, processed on day two, and the money moves on day three. Add the advance-notice period before a first collection and a new mandate typically makes its first collection within a week of signup. A good platform handles the timing, the notices and the scheme rules for you — you just set the schedule.
Card acceptance costs a percentage of every transaction, which stings on large amounts. Direct Debit through Quadriel is 0.9% + 15p per collection — or on the high-value plan, a flat £2.00 per collection regardless of size, which is what makes £1,400 rents and £5,000 trade invoices economical to collect. You pick the plan that fits your average collection and can switch monthly.
Recurring anything — memberships, plans, rent, retainers, subscriptions — and invoiced B2B, where amounts are large and relationships are ongoing. Cards win at the point of sale and for one-off consumer purchases; the strongest setups run both from one account and route each payment to the rail that suits it. That combination — every rail in one account — is exactly what Quadriel is built for.
Payers can reclaim collections taken in error — that’s the Guarantee, and it’s why payers trust the scheme. For businesses collecting what was genuinely agreed, indemnity claims are rare; clear advance notices and accurate amounts keep them that way. Disputed collections cost £15 only when a claim succeeds.