12th October 2026
Britain’s public finances are heading towards another difficult reckoning. With inflation rising, government borrowing becoming more expensive and public services under pressure, the Institute for Fiscal Studies (IFS) has warned that the Chancellor faces some uncomfortable decisions in his Budget on 28 October.
The problem is not simply that the government is short of money today. It is that existing spending plans may no longer be realistic once the cost of delivering public services, paying benefits and meeting new defence commitments is taken into account.
Where has the money gone?
The IFS estimates that the government faces spending pressures of up to £35 billion a year by 2030–31 if it wants to maintain planned public services and meet its ambitions for higher defence spending.
Inflation is a major part of the problem. The conflict in the Middle East has pushed up energy prices, making the outlook for inflation worse than it appeared in the spring. Higher inflation means public-sector wages, contracts and benefits can cost more than originally budgeted.
At the same time, higher interest rates and government borrowing costs increase the amount that must be spent servicing the national debt.
There is, however, another side to the calculation. Inflation can also increase tax receipts, particularly when wages and prices rise. That may cushion some of the damage to the public finances, but it does not remove the underlying problem.
The Chancellor’s uncomfortable choices
The government has several options, none of them painless.
It could raise taxes, although further increases would put pressure on households and businesses and could conflict with existing political commitments.
It could reduce welfare spending, but that would affect people who rely on benefits to pay their bills. Alternatively, it could squeeze departmental budgets, leaving public services to find savings or accept reductions in what they deliver.
There is also the temptation to postpone difficult decisions until a later spending review. But the IFS argues that the government needs credible plans now, rather than relying on spending figures that may prove impossible to deliver.
The distinction matters. A department can be given a budget that looks adequate on paper, yet find that rising wages, energy costs and other bills leave it able to provide fewer services in real terms.
Can Britain simply borrow more?
Borrowing more might appear to offer a way out, but it comes at a price.
Investors who lend money to the government expect to be compensated for the risks and the length of the loan. When government borrowing costs rise, more public money must go towards interest payments instead of hospitals, schools, local services or investment.
Higher borrowing can sometimes be justified, particularly when it finances productive investment. But continually borrowing to cover a gap between ordinary spending and tax revenue creates a different problem.
The government must convince financial markets that its plans will eventually put the public finances on a sustainable footing. If investors lose confidence, borrowing can become even more expensive.
That is why the IFS places so much emphasis on credible spending plans rather than concentrating solely on the amount of financial headroom the Chancellor has against his fiscal rules.
What does this mean for Scotland?
The decisions made in Westminster matter directly to Scotland. Changes in UK taxation, welfare policy and economic growth affect Scottish households and businesses, while the UK Budget also influences the funding available to the Scottish Government.
That leaves Holyrood facing its own difficult choices over the NHS, councils, education and other public services.
For communities such as Caithness, the consequences can be particularly important. When public budgets are tight, rural areas have to compete for resources while facing the additional costs of distance, transport and delivering services to relatively small populations.
There is a danger that decisions made to balance national accounts can have disproportionate effects on places that already have limited services and fewer alternatives.
The real test comes on 28 October
The IFS report is not a prediction that Britain will run out of money. Nor does it mean that every pound of the projected spending pressure must be met through tax increases.
It is a warning that the government's plans need to add up. Tax receipts may turn out better than expected, economic growth could improve, and some spending pressures may change. But it would be risky to build a Budget around optimistic assumptions without a credible alternative.
The Chancellor must explain how he intends to reconcile the competing demands of public services, welfare, defence and debt interest. He must also show how the country can avoid simply transferring today's problems into even larger bills in future years.
For taxpayers, the important question is not merely whether taxes will rise. It is what they will receive in return, whether public services will improve or deteriorate, and whether the government's decisions will make the economy stronger over time.
Britain has choices, but it cannot escape the arithmetic indefinitely. The Budget will show whether the government is prepared to confront that reality or postpone the argument once again.
Source: Institute for Fiscal Studies, The outlook for the public finances, IFS Green Budget 2026, published 12 October 2026:
https://ifs.org.uk/publications/outlook-public-finances-1