Burnham Government’s First Budget: The Squeeze, the Black Hole, and What Businesses Should Do
The bind
Andy Burnham's government faces its first real test of credibility in October, when Chancellor John Healey delivers his maiden Budget. The gap between what this government has promised and what it can afford has narrowed to almost nothing. Burnham has made a run of early spending commitments, from an electricity VAT cut to council house-building and a technical-skills programme, while insisting they will be "fully funded." He has also said he will not be "unrealistic" about the public finances and has refused to rule out tax rises. Read together, those two statements point in one direction.
The arithmetic is unforgiving. The Iran war and higher borrowing costs have seen the government's fiscal headroom shrink from around £22 billion to roughly £15 billion, inflation ticked back up to 2.9 per cent in July, and the first month of the financial year already produced a surprise deficit. Debt sits near 95 per cent of GDP and long-term borrowing costs are among the highest in decades. Burnham has committed to keeping the existing fiscal rules, which rules out simply borrowing his way through. That leaves the classic short menu: raise taxes, cut spending, or some combination of the two.
Underneath the Budget arithmetic sits a deeper trap, and it is the one that matters most. The UK economy is caught in something close to a doom loop. Weak growth produces weak tax receipts, weak receipts leave nothing to invest with, the absence of investment starves the infrastructure, skills and industrial capacity that would raise productivity, and low productivity feeds straight back into weak growth. Inside that loop, the only ways to raise more revenue are higher taxes or lower spending, both of which drain demand and make growth harder still. The single route out is to break the cycle from the supply side, by investing at scale in skills, infrastructure and reindustrialisation so the economy grows into a larger tax base rather than squeezing a stagnant one. The cruelty of Burnham's position is that this investment is exactly what the loop denies him the money to fund. Reconciling that contradiction, spending now to grow later without losing the confidence of the bond markets, is the real test beneath every line of the Budget.
This note sets out the four pressures that will define the Budget, and what businesses and investors should take from it.
One: taxes will rise, and business is exposed
The consensus among economists is that meaningful tax rises are now unavoidable. The difficulty for Burnham is that Labour's manifesto ruled out increases to the three biggest revenue-raisers, income tax, National Insurance and VAT, which between them cover the bulk of the tax base. Boxing off the easy options does not remove the need for revenue. It simply pushes the search elsewhere, and "elsewhere" is where business sits.
The concern for firms is straightforward. With personal taxes largely off the table, the pressure transfers to companies, wealth, and property. There is already reporting of a possible shake-up of property taxation, including replacing stamp duty and council tax with an annual land value tax. Some on the left of the party are pushing for wealth taxes. Polling gives Burnham some cover here: a YouGov survey found the public's preferred way to fill the defence gap was raising the very top rate of income tax on earnings above £125,140, ahead of both welfare cuts and a rise in the middle 40p rate. Burnham has signalled reluctance to raise the cost of doing business or to deter investment, but reluctance is not the same as room to manoeuvre, and the numbers may force his hand.
There is a second-order risk here that businesses underrate: not the tax rises themselves, but the months of speculation before them. The drawn-out pre-Budget briefing of the Reeves era is now widely regarded as a growth killer in its own right, freezing investment decisions and corroding confidence while firms waited to see who would be hit. Burnham and Healey have tried to lock down the process precisely to avoid repeating that. Whether they succeed is itself something to watch, because the uncertainty does damage well before any measure takes effect.
Two: the defence black hole
Burnham inherited a defence commitment with a hole in it. Starmer's Defence Investment Plan promised an extra £15 billion over four years, yet left roughly £4.7 billion of that unfunded, to be found at this very Budget. By several accounts Burnham was effectively blindsided by the gap, learning of it only as the plan was published. Because he has retained the fiscal rules, borrowing to fill it is off the table, which again leaves only cuts or taxes. And this is the floor, not the ceiling: senior military figures argue that even the full £15 billion is less than half of what genuine readiness would require, and no firm date has been set for reaching 3 or 3.5 per cent of GDP, the level allies expect.
For businesses, the defence line has two faces. It is a fiscal drain that makes tax rises likelier, and simultaneously an industrial opportunity, since much of that spending is meant to flow to British manufacturing, engineering and autonomous-systems firms, a theme we developed at length in the AI Week series. The question for the Budget is how the gap is plugged, because the method determines who pays.
Three: welfare, the triple lock, and the jobs crisis
The three hardest political choices are linked. The welfare bill has climbed to around £333.7 billion for 2025-26, and the pensions triple lock is forecast to cost some £16billion a year by 2030. Both are obvious targets for a Chancellor hunting savings, and both are close to untouchable. Cutting working-age welfare would reignite exactly the backbench revolt that helped end Starmer, and the party's left has already warned against balancing the books on disabled people. The triple lock is politically radioactive and protected by manifesto commitment.
Burnham's stated way through is the one that connects this Budget to the labour market: reduce the welfare bill not by cutting entitlements but by getting more people into work. That is the right instinct, and it is where the deteriorating jobs picture becomes central. As we have argued before at Arcara Strat, the labour market is softening in a structurally worrying way. Unemployment has edged up to 4.9 per cent, payrolled employment is falling, and vacancies at around 707,000 are the lowest since early 2021, while youth inactivity remains the deeper long-term threat. A "back to work" strategy only lowers the welfare bill if there are jobs to move people into, which means the Budget's success on welfare depends on its success on growth and hiring. The danger is a feedback loop we have flagged repeatedly: weak hiring suppresses incomes, weak incomes suppress demand, and weak demand suppresses hiring again. If Burnham cannot break that cycle, the welfare bill keeps rising regardless of his intentions.
His early moves lean heavily on employers to help carry this. In late August he praised Sainsbury's for agreeing to create around 10,000 work-experience placements for young people, focused on disadvantaged areas with high numbers not in education, employment or training, and urged other businesses to follow. That model, employer-led work experience aimed squarely at the young and the excluded, is one that firms of any size could replicate. For local businesses in particular it is an underappreciated opportunity: offering placements aligns them directly with the government's clearest social priority, builds a pipeline of local talent, and positions them well with the mayors and combined authorities who are increasingly shaping skills funding.
Four: vanishing headroom and the Strait
The single biggest variable sits outside the Treasury's control. The war involving Iran and the United States, and specifically the Strait of Hormuz, has already eaten a third of the fiscal headroom through higher borrowing costs and energy-driven inflation. The obvious question for the Budget is whether that pressure eases or intensifies between now and late October.
The honest answer is that the disruption now looks less like a passing crisis and more like a new normal. After the spring ceasefire and a June memorandum on safe passage, conflict resumed momentarily in July, the Revolutionary Guard again moved to control the Strait, and US-Iran diplomacy has since effectively collapsed. The Strait has not shut for good, and vessels still transit, but even when it is open the traffic runs at a small fraction of its pre-war level, a handful of ships a day against a normal flow of roughly 85 to 130, war-risk insurance premiums are many times higher than before the war, and several insurers have withdrawn cover altogether. The realistic expectation is not a clean return to how things were. It is a structurally impaired chokepoint, higher-cost and lower-volume, that will probably never revert to pre-war normality on any horizon relevant to this Budget. That new normal bakes in a permanent risk premium on oil and gas, and with it a standing upward pressure on inflation and borrowing costs, even before any further escalation. And further escalation remains the tail risk on top: were the Strait to close outright, energy prices would spike, inflation would reaccelerate and the headroom would vanish entirely. Burnham's Budget is, to an uncomfortable degree, hostage to decisions taken in Tehran and Washington. That is not a reason for paralysis, but it is a reason to treat elevated energy risk as a standing feature of the landscape and to build in contingency rather than spend the last of the headroom in advance.
What businesses should do
A few practical points, including some that are underappreciated.
First, do not overreact to pre-Budget speculation. The lesson of the Reeves years is that firms which froze on the basis of rumours often damaged themselves more than the eventual measures did. Plan against the confirmed position on 28 October, not the leaks before it.
Second, prepare for the tax burden to shift from people to companies, property and wealth rather than to rise across the board. Model the exposure now: land and property holdings, capital-intensive balance sheets, and highly leveraged structures are the areas most likely to feel a change of approach. If a land value tax or a property overhaul materialises, the winners and losers will be very unevenly distributed, and the firms that have already mapped their position will move fastest.
Third, treat energy as both a structural overhead and a spike risk. Structurally, British industry already pays the highest electricity prices in the developed world, a chronic drag on competitiveness and one of the heaviest fixed overheads UK firms carry, which the British Industrial Competitiveness Scheme will only partly ease from 2027. On top of that sits the Strait, which makes the central energy-price case irrelevant if the tail risk lands, so businesses exposed to energy and freight costs should stress-test against a renewed Hormuz disruption rather than assume a smooth glide back to pre-war prices. On the domestic supply side, Burnham has signalled a pragmatic softening on the North Sea, saying Britain "can't ignore" its reserves, with decisions on the Jackdaw and Rosebank fields expected within weeks after consultations closed in mid-August. This is a partial shift rather than a formal reversal of the manifesto, since both are existing fields rather than new licences, and as we have noted before it would do little to move energy bills in the near term in any case.
Fourth, watch the growth-and-hiring measures as closely as the revenue measures. Because Burnham's welfare strategy depends on employment, expect targeted support for job creation, skills and apprenticeships. Firms positioned to use those schemes, particularly for younger workers, can convert a fiscal squeeze into subsidised recruitment.
The devolution opportunity
The most underappreciated element of all is devolution, and it is where Burnham's instincts and the fiscal reality point the same way. Facing a Budget with little money to give away, the Chancellor is expected to lean on the reforms the OBR will score as pro-growth, and devolution is near the top of that list, especially any move that lets local leaders retain more of the revenue their areas generate. For a Prime Minister who ran Greater Manchester for a decade, this is home turf.
For local businesses and employers, that creates a real and early opportunity. As economic power shifts towards mayors and combined authorities, the firms that get ahead will be those that build relationships with local decision-makers now, before the frameworks harden. Concretely, that means engaging with mayoral growth and skills plans, shaping the vocational and technical pathways being designed around local industries, positioning for local procurement and public-investment pipelines in construction, energy, transport and social housing, and being at the table when combined authorities decide how retained business rates and local revenues are deployed. Devolution turns "what will Westminster do to us" into "what can we do with our mayor", and the businesses that grasp that distinction early will capture a disproportionate share of the upside.
Bottom line
Burnham's first Budget is an exercise in reconciling promises he has made, rules he has kept, a defence gap he did not create, and a war he cannot control. Tax rises look unavoidable, the politically easy savings are the ones he cannot make, and the external environment could erase his room for manoeuvre overnight. For businesses, the message is to plan against the confirmed Budget rather than the noise, to prepare for a tax burden that shifts onto companies and property, to hedge the Strait rather than forecast it, and above all to treat the devolution of economic power not as a threat but as the clearest opportunity on offer.
