Public finances turn ugly just as Chancellor needs good news

As reported by ICAEW

Weaker receipts than expected combined with prior month corrections resulted in a £12bn year-to-date budget overrun in the August monthly public finances.

The monthly public sector finances release for August 2025 published by the Office for National Statistics (ONS) on 19 September reported a provisional shortfall between receipts and total public spending of £18bn in August 2025 and £84bn for the five months then ended. These were £6bn and £12bn over budget respectively and £4bn and £16bn higher than in the same periods in 2024.

Martin Wheatcroft, External Adviser on Public Finances to ICAEW, says: “This month’s public finance numbers took a turn for the worse as not only did weaker than expected receipts drive a £6bn budget overrun in August, but revisions to prior months added a further £6bn to the deficit to turn a broadly neutral position a month ago into a £12bn year-to-date budget overrun for the first five months of the 2025/26 financial year.

“These numbers are far from helpful to a Chancellor in desperate need of some good financial news, adding to the prospect of even higher tax rises in the Autumn Budget 2025 than previously feared.”

Month of August 2025

Receipts of £93bn in August 2025 were £5bn or 5% higher than the same month last year, while total public spending was £111bn, £8bn or 8% more than in August 2024. The latter can be analysed between current spending including depreciation of £107bn, slightly below the £108bn monthly average in the first four months of the financial year, and net investment of £4bn, in line with the monthly average incurred between April and July 2025.

Excluding net investment, the current budget deficit for the month of £14bn represented a £4bn deterioration over the current budget deficit of £10bn in the same month last year, highlighting how receipts have failed to keep pace with increases in current spending.

The overall £18bn fiscal deficit for the month was £6bn over budget and £4bn more than in August 2024.

Five months to August 2025

Table 1 highlights how year-to-date receipts of £477bn were up 6% on last year’s equivalents. This included income tax receipts, up 8% from a combination of inflation and fiscal drag from frozen tax allowances, and national insurance receipts, up 18% as a consequence of the increase in employer national insurance from April 2025. VAT receipts were flat year-on-year, in effect a 3% to 4% fall after taking account of consumer price inflation, highlighting the weak economic conditions facing the UK.

Meanwhile, the 8% increase over last year in current spending including depreciation to £539bn in the first five months to August 2025 has principally been driven by public sector pay rises, higher supplier costs, and the uprating of welfare benefits.

This included a £7bn or 12% increase in debt interest to £64bn, which comprised a £6bn increase in indexation on inflation-linked debt as inflation resurged and a £1bn increase in interest on variable and fixed-interest debt. The latter reflects a higher level of debt compared with a year ago being partially offset by a lower Bank of England base rate.

The resulting current budget deficit of £62bn to August 2025 was 29% higher than the £48bn for the same five months last year, a major concern given that the government’s plan was to reduce the cumulative current budget deficit to £47bn at this point.

Net investment of £22bn in the first five months of 2025/26 was £2bn or 10% higher than the same period last year with capital expenditure of £39bn up by £3bn and capital transfers (capital grants, research and development funding, and student loan write-offs) of £13bn up by £1bn, offset by depreciation of £30bn up by £2bn.

The overall provisional deficit for the five months to August 2025 of £84bn is £16bn or 24% more than in the same five months last year and £12bn higher than budget. The latter can be analysed as a £15bn budget overrun on current receipts less current spending for the year-to-date, less a £3bn saving on net investment.

Table 1: Summary receipts and spending

5 MONTHS TO AUG	2025/26£BN	2024/25£BN	CHANGE%
Income tax	122	113	+8%
VAT	84	84	-
National insurance	80	68	+18%
Corporation tax	43	40	+7%
Other taxes	96	93	+3%
Other receipts	52	51	+2%
Current receipts	477	449	+6%
Public services	(301)	(276)	+9%
Welfare	(129)	(122)	+6%
Subsidies	(15)	(14)	+7%
Debt interest	(64)	(57)	+12%
Depreciation	(30)	(28)	+7%
Current spending	(539)	(497)	+8%
Current deficit	(62)	(48)	+29%
Net investment	(22)	(20)	+10%
Deficit	(84)	(68)	+24%

Borrowing and debt

Table 2 summarises how the government borrowed £99bn in the first five months of the financial year to take public sector net debt to a provisional £2,909bn on 31 August 2025. This comprised £84bn in public sector net borrowing (PSNB) to fund the deficit and a further £15bn to fund government lending and working capital requirements.

The table also illustrates how the debt to GDP ratio increased by 1.6 percentage points from 94.8% of GDP at the start of the financial year to 96.4% on 31 August 2025, with incremental borrowing of £99bn, equivalent to 3.3% of GDP, being partly offset by 1.7 percentage points from the ‘inflating away’ effect of inflation and economic growth adding to GDP, the denominator in the net debt to GDP ratio.

Table 2: Public sector net debt and net debt/GDP

5 MONTHS TO AUG	2025/26£BN	2024/25£BN
PSNB	84	68
Other borrowing	15	7
Net change	99	75
Opening net debt	2,810	2,686
Closing net debt	2,909	2,761
PSNB/GDP	2.8%	2.4%
Other/GDP	0.5%	0.2%
Inflating away	(1.7%)	(2.3%)
Net change	1.6%	0.3%
Opening net debt/GDP	94.8%	95.6%
Closing net debt/GDP	96.4%	95.9%

Public sector net debt on 31 August 2025 of £2,909bn comprised gross debt of £3,339bn less cash and other liquid financial assets of £430bn. 

Public sector net financial liabilities were £2,550bn, comprising net debt of £2,909bn plus other financial liabilities of £715bn less illiquid financial assets of £1,074bn. 

Public sector negative net worth was £893bn, being net financial liabilities of £2,550bn less non-financial assets of £1,657bn.

Revisions

Caution is needed with respect to the numbers published by the ONS, which are repeatedly revised as estimates are refined and gaps in the underlying data are filled. This includes local government, where the numbers are only updated in arrears and are based on budget or high-level estimates in the absence of monthly data collection.

This month was no different, with the ONS revising the previously reported deficit for the four months to July 2025 up by £6bn, as well as updating prior year numbers for the annual results of the Bank of England and several other public bodies as well as other typical annual updates such as revised student loan calculations. 

More significantly, the ONS revised reported deficits back to 1998 for methodology and classification changes and back to 2011 for local government outturn numbers that had not previously been incorporated. The reported deficits for 2020/21 and 2021/22 were decreased by £3bn and £2bn to £311bn and £120bn respectively, 2022/23 remained unchanged at £127bn, 2023/24 was increased by £2bn to £134bn, and 2024/25 was reduced by £2bn to £146bn.