PRA110 is the cash flow mismatch return — a maturity ladder that spreads contractual and contingent flows across 108 time buckets. Whether you file it weekly or monthly turns on one threshold: EUR 30 billion of total assets. A separate £5 billion figure exists, but it governs escalation during a stress, not the ordinary frequency.
What it is
The return captures the maturity mismatch of an institution's activities. It covers contractual flows and contingent outflows, allocated across 108 time buckets by residual maturity, with days meaning calendar days. It builds on the EBA's maturity ladder instructions.
It exists because the liquidity coverage ratio does not answer the question the PRA wanted answered. The LCR measures the cumulative position at the end of 30 days; it does not test whether a firm can cover a large outflow on a given day. As the PRA puts it, "it is possible that a firm meets its LCR, yet is not able to survive the stress scenario captured in the LCR itself."
Cash flow mismatch risk — CFMR — is the risk that a firm has insufficient liquidity from high quality liquid assets and other inflows to cover outflows on a daily basis. The PRA identifies four sources: low point risk, HQLA monetisation risk, cliff risk and FX mismatch risk.
One point of precision. PRA110 does not itself output a CFMR metric. The PRA applies its own stress assumptions to the contractual flows and open maturity columns from the return, then computes daily projected inflows, outflows and net outflows under each scenario, producing survival days, a net liquidity position, and peak cumulative net outflows. The firm supplies the ladder; the PRA supplies the stress.
It was consulted on in CP13/17, finalised in PS2/18, and took effect on 1 July 2019.
Who submits it
Within Regulated Activity Group 1 — deposit-takers — PRA110 is reported by a UK bank other than a ring-fenced body, a ring-fenced body, and a building society. Within RAG 3, it is reported by UK designated investment firms.
The reporting basis matters and is easy to get wrong. It is completed on an individual basis — even where the firm has an individual consolidation permission, unconsolidated by reference to the firm alone. If the firm is part of a domestic liquidity sub-group, that basis displaces the individual one. If part of a sub-consolidation group, on that basis. And if it is a UK parent institution consolidated by the PRA, on a consolidated situation basis. Where more than one applies, the return is completed separately on each.
Currency: the single currency reported under CRR Article 415(1), plus any additional currencies required under Article 415(2).
Two points on scope. Third-country branches report liquidity through the Branch Return instead, twice a year, providing summary whole-firm information based on data reported to the home state supervisor. And small domestic deposit takers are not exempt from PRA110 — the Strong and Simple liquidity simplification removed four of the five ALMM returns, not this one.
The frequency threshold: EUR 30 billion
This is the number that decides the workload, and it is routinely misquoted.
Weekly reporting applies where total assets are equal to or greater than EUR 30 billion on either an individual basis or a UK consolidation group basis. It stops applying only if total assets fall below EUR 30 billion on both bases for four consecutive weekly reporting periods.
Monthly reporting applies where total assets are less than EUR 30 billion on both bases. It stops applying if during any monthly period they reach EUR 30 billion on either basis, with weekly reporting starting after the end of that period.
Three things to note. The measure is total assets — the balance sheet total under the measures implementing the Bank Accounts Directive — not liabilities excluding capital and not the LCR denominator. The rulebook denominates it in euro, with no sterling equivalent. And there is a wording discrepancy worth avoiding: the Bank of England's reporting webpage describes it as "more than €30 billion" and "€30 billion or less", whereas the rule says "equal or greater than" and "less than". The rule governs.
Frequencies and reporting periods are calculated on a calendar year basis, not from the firm's accounting reference date.
Where the £5 billion figure belongs
It is a stress-escalation threshold, not a frequency threshold. During a specific or market liquidity stress:
- A firm that would otherwise report weekly must report every business day;
- A firm that would otherwise report monthly must report every business day where total assets are £5 billion or more on an individual or UK consolidation group basis, and weekly where they are below £5 billion on both — for as long as the stress persists.
And a requirement that has capital-planning consequences: firms must be able to meet daily and weekly reporting at all times, even absent a stress. The systems capability has to exist before it is needed, which is the real cost of this return for a monthly reporter.
Deadlines
- Daily and weekly — 22:00 London time on the business day immediately following the last day of the reporting period;
- Monthly — 15 business days.
The gap between those two is the whole story of PRA110 as an operational problem. A monthly reporter has a fortnight and a manual process; a weekly reporter has until 10pm the next day and needs an automated one. Crossing EUR 30 billion is therefore a systems project, not a reporting change.
The historic transitional allowing weekly reporters two business days, which applied for four months in 2019, is spent and no longer in the rulebook.
Where it sits, and whether it is changing
PRA110 is in the Regulatory Reporting (CRR firms) Part of the PRA Rulebook: Chapter 7 for RAG 1, Chapter 9 for RAG 3, with the data item itself at Chapter 16. Completion guidance is in SS34/15, Appendix 11 — a supervisory statement rather than a rule.
On whether it survives the data reforms: it does. The December 2025 deletion of banking reporting templates removed 37 templates, including PRA109, and PRA110 was retained. A suggestion to remove its memorandum lines was recorded as out of scope for that exercise. The February 2026 future banking data discussion paper does not mention PRA110, and neither do the Strong and Simple policy statements finalising the SDDT capital regime for 1 January 2027.
Acumon supports banks, building societies and investment firms on regulatory reporting and the controls behind it through financial services audit, internal audit and systems and data work — see also our guides to the ICARA and significant risk transfer. If your balance sheet is approaching EUR 30 billion, the move from a 15-business-day deadline to a next-day one is the change to prepare for.