If UK Chancellor Rachel Reeves was expecting a cheerier, easier year than the one that has just gone, then she should look away now. Economic growth was meant to offer a little more fiscal latitude; however, according to Morgan Stanley, the handcuffs will remain firmly in place.
The bank’s 2026 outlook suggests a year shaped not by renewed fiscal space but by the same awkward constraints that defined 2025: weak growth, deteriorating public finances and the political impossibility of cutting services or raising taxes again.
What made 2025 so hard
In fairness, Reeves never had a clean start. The year was defined by three reinforcing problems: stubbornly weak productivity, fading growth and a public realm whose expectations far exceed the funding available.
The Office for Budget Responsibility has repeatedly downgraded productivity and growth across the forecast horizon, and those downgrades mechanically shrink Reeves’s already narrow fiscal headroom.
Every notch lower in productivity pushes her towards one of three unpalatable choices: more tax, more borrowing or tighter spending just as voters expect visible improvement in everything from the NHS to local services.
She also entered 2025 having already raised around £40 billion in taxes in her first fiscal package. That move was billed as a one-off reset, yet it leaves little political room to tap working-age taxpayers again. At the same time, she has promised no return to austerity and bound herself to strict rules requiring debt to fall.
Economists call this the “impossible trilemma.” Reeves must avoid deep service cuts, avoid another bruising round of tax rises and still meet tight fiscal rules in an environment of weaker growth and higher debt-interest costs. In 2025, all three objectives pulled against one another. The result was fiscal drift rather than fiscal freedom.
A soft economy offers little relief
Morgan Stanley’s numbers confirm that 2026 does not automatically get easier. The bank expects GDP to grow by only 0.9% next year, down from 1.4% this year.
Real disposable income growth slows to 0.5% in 2026, from 4.1% in 2024 and 1.5% in 2025. Consumers remain tight-fisted: the savings rate is expected to hover near 10%, well above pre-Covid norms, and household spending rises only 0.3%. That does not generate the buoyant VAT and income-tax receipts the Treasury might hope for.
Business investment, meanwhile, loses some of its surprising post-Covid resilience. Companies in utilities, transport, real estate and tech have invested heavily despite high borrowing costs. But Morgan Stanley expects momentum to slow as confidence softens, credit growth slows and firms shift towards hiring rather than further capital outlays.
Business investment growth falls from 3% this year to 2.1% in 2026; residential investment follows the same pattern as earlier rate cuts fade and Budget uncertainty chills decisions around the turn of the year. This is not a collapse, but it is not the growth-boosting surge Reeves has been hoping to unlock.
The labour market is also losing its composure. Unemployment is forecast to rise to 5.3% in the first half of next year, up from 4.8% this year. Vacancies have fallen, payrolls have slipped and candidate availability has risen. Weaker migration flows are now capping labour supply growth.
That helps prevent unemployment from spiking even higher, but it also removes a key source of flexibility in recent years. Wage growth cools to around 3% by the end of 2026, consistent with the inflation target but not the sort of nominal growth that meaningfully lifts tax receipts. Morgan Stanley describes a period of “elevated slack,” which accurately captures an economy that is neither in crisis nor generating the dynamism Reeves needs.
Inflation relief, but limited fiscal rewards
Inflation at least behaves. Morgan Stanley expects headline CPI to fall to the 2% target in April and stay close to it across 2026. Softer wage pressures, easing administrative price rises, lower utility bills and more benign goods inflation all help. Services inflation, the sticky element of the basket, should drift lower as labour costs normalise and last year’s national insurance rise washes out. This gives households some breathing room and eases pressure on departments grappling with pay demands.
But even here the fiscal payoff is modest. Lower inflation shrinks the government’s interest bill and reduces uprating costs, but the underlying constraint remains: real-terms spending plans are tight, and the deficit stays just under 4% of GDP.
Morgan Stanley still judges the 2027 Spending Review as the most difficult fiscal moment of the Parliament, when Reeves must choose between topping up squeezed departments, loosening her rules or risking market patience.
What she needs to change for 2026
To make 2026 look like success rather than a continuation of 2025’s grind, Reeves needs clearer and better-communicated trade-offs, a tighter focus on growth-enhancing reforms and enough political cover to adjust her fiscal rules if needed.
In practice, that means turning the impossible trilemma of debt rules, tax restraint and public service demands into a more credible, prioritised strategy that markets, voters and the OBR all believe can withstand shocks.
The first step is to re-anchor expectations. She needs to set out a multi-year path for tax, investment and public services that is honest about constraints but still points towards stronger medium-term growth.
That likely requires explicitly prioritising capital spending that lifts productivity in areas such as infrastructure, housing, energy and skills, even if that means re-profiling or loosening parts of the current rules. Relying on ever-tighter day-to-day departmental budgets is not realistic and will continue to prompt OBR downgrades that eat her headroom.
Second, Reeves needs visible wins that households can feel. Inflation returning to target is a start, and the Bank of England’s expected path to a 3% rate helps ease the cost-of-living squeeze. But nothing matters more politically than measurable improvements in the NHS, a flagship test of the government’s programme. That requires not only funding but operational reform so that extra resources deliver shorter waiting lists rather than being absorbed by demographic and pay pressures.
Policy levers and political risks
Reeves argues that stability and firm fiscal rules are the basis for growth. But 2026 success depends on whether she can match that stability with a more ambitious supply-side agenda. Planning reform to get roads, homes and energy projects built faster; a more investment-friendly tax environment; and predictable regulation for sectors such as clean energy and advanced manufacturing all sit at the heart of raising potential growth.
Morgan Stanley notes that potential growth could be as high as 1.4% next year and 1.5% in 2027 as productivity improves and early AI diffusion kicks in. That is one of the few genuine bright spots in the outlook.
If the OBR continues to downgrade medium-term growth and Reeves refuses to adjust either her rules or the policy mix, she risks repeating 2025. Downgrades will erode her headroom, and she will be forced into ad hoc decisions that look reactive rather than strategic.
Politically, she also needs to rebuild her narrative. Early tax rises and difficult decisions were presented as a down payment that would steady the ship. By 2026, she must show that this was a transition rather than a permanent condition.
That means demonstrating that growth, wages and employment are outperforming peers, not lagging them. Without that proof, the government may find itself judged against its own early rhetoric, including the promise of the “fastest growing economy in the G7.”
Any further round of tax rises or stealth squeezes would intensify the sense that 2025 was not an aberration but the new normal.
Crumbs of comfort
There are glimmers of optimism. Productivity is improving. The labour market, although softening, is not collapsing. Inflation is returning to target. Potential growth looks slightly better than feared. And importantly, the fiscal handcuffs are tight but not tightening.
The deficit edges lower, debt rises only gradually, and markets remain calm. Stability may not be the prize Reeves hoped for. But given the year she has had, it is not nothing.
Still, if she wants 2026 to look markedly better than a very difficult 2025, she will need to craft a clearer strategy, communicate it consistently and decide which parts of the trilemma to relax. Without that, next year risks becoming another round of the same constrained, attritional politics that defined her first full year in office.