Rachel Reeves has told Whitehall departments to cut about 1% from capital budgets negotiated less than a year ago, using the squeeze to help pay for a bigger defence bill. The move leaves John Healey with a £13.5bn uplift over four years, not the £18.5bn his Ministry of Defence had asked for.
The timing matters because this is the first hard answer to a question Labour has been trying to delay: how to fund higher defence spending without choosing openly between cuts, taxes or more borrowing. Reeves has also said her department will use reserves to cover £3.5bn of projects the MoD expected to fund itself, a sign that the Treasury is trying to limit the damage to day-to-day spending while making departments absorb the hit.
For Healey, the settlement was not enough. Treasury insiders say the package was not far short of what was needed, but he viewed it as penny-pinching, a frustration that goes to the heart of the argument inside government. He wanted an extra £18.5bn over four years for the defence investment plan; instead, he was offered a smaller uplift and told the rest had to come from elsewhere in Whitehall.
The decision also lands in a government that has already tested the limits of political pain. Keir Starmer used cuts to the UK aid budget to fund an earlier defence rise, and that move cost Anneliese Dodds her cabinet post. Welfare cuts were then proposed, badly handled and reversed after a backlash from Labour MPs. That history helps explain why the Treasury has reached for departmental capital budgets rather than fresh taxes, even as Labour’s manifesto rules out other expensive promises such as the pensions triple lock for this parliament.
The scale of the problem is bigger than this week’s settlement. The strategic defence review called for a national conversation about how to proceed, and Starmer has already promised to lift defence spending to 3% of GDP at some point in the next parliament and 3.5% by 2035. Meeting the 3.5% pledge would require about £30bn a year in extra spending over the next decade, a sum that cannot be hidden inside existing reserves or a one-off departmental trim.
That leaves the government with the same choice it has been avoiding: cuts, tax rises or borrowing. Treasury officials had already squeezed departments ahead of the spending review, and there is little political appetite in No 10 for higher taxes after two bruising tax-raising budgets. For now, Reeves has bought time by shaving capital plans and shifting money from one pocket of the state to another. What she has not done is answer how Britain pays for the next jump in defence spending, or how she protects hospitals, schools and green investment while the bill keeps growing.

