Uncertainty can stall a launch. It shouldn’t stall preparation

The Budget is a timely example, but the pattern is worth understanding because it shows up whenever a fiscal event, or any other source of uncertainty, puts net proceeds in question.

What was in play heading in

In the run-up to the October Budget, the government had ruled out raising the main rates of income tax, VAT and employee National Insurance, and corporation tax was expected to stay at 25% for large companies.

With those levers off limits, speculation turned to capital gains tax, property and wealth. Over the summer, commentators discussed options ranging from a modest CGT increase to full alignment with income tax rates.

That speculation cooled in the final week. Days before the 28 October Budget , Chancellor John Healey reportedly rejected calls to raise CGT, amid concerns it could weigh on growth, with a levy on bank revenues expected to do more of the work instead . At the time, higher-rate taxpayers paid 24% CGT on most taxable gains .

Ruling out a rate rise didn’t settle every question for sellers, though. Further restrictions on Business Asset Disposal Relief, or changes to how inherited gains are treated, remained on the table . And for a seller weighing net proceeds, a reported intention isn’t the same as published detail.

Why tax uncertainty can affect deal timing

For shareholders considering a sale, uncertainty around potential tax changes can influence decisions on transaction timing, particularly where those changes could affect their net proceeds. Same headline price, potentially smaller cheque. And changes don’t always wait for the new tax year: the October 2024 Budget raised CGT rates with immediate effect.

Buyers and investment committees face their own version of that question, about valuations, financing and structure.

The public finances haven’t eased the pressure. The UK borrowed £24.5bn in September, £1.9bn above the OBR forecast, and borrowing for the financial year to September ran £6.0bn above forecast. A wider gap tends to sharpen speculation about revenue-raising measures, even when headline rates are ruled out.

Budget day doesn’t resolve everything overnight, either. Announcements still need legislating, and details such as start dates and anti-forestalling rules can take time to settle.

How the market could respond around a Budget

Fiscal events don’t freeze the market, but they can shift timing. A few scenarios are plausible, and dealmakers will recognise them from previous Budgets.

Advanced deals may speed up. Where a change is expected, mandates close to the line can push to complete before the announcement. That happened ahead of the October 2024 Budget, when MarshBerry reported UK insurance broking volumes rising slightly as sellers raced to beat a well-signalled CGT increase .

Earlier mandates may stay in preparation. The work continues; the launch waits. Documents get gathered and processes designed, but some sellers will prefer not to go live into uncertainty.

Launches could cluster afterwards. If enough mandates wait on the same date, more processes may come to market once there’s clarity, which would mean more competition for buyer attention and advisor bandwidth. Whether that happens this time, and to what extent, remains to be seen.

Either way, it’s a question of timing, and timing tends to reward whoever is ready first.

A selective market is the bigger story

Budget or no Budget, UK dealmaking had already become more selective, and the data tells that story more clearly than any single fiscal event.

PwC found UK deal value more than doubled to £124.2bn in the first half of 2026, while the number of announced deals fell 13% to 1,301 , with ten transactions making up almost two-thirds of total value. Experian’s Q1 2026 review showed the same “volume down, value up” dynamic, with volumes falling 30% year on year while aggregate disclosed value rose 36%. Experian also found that more extensive buyer due diligence has lengthened the time between deal announcement and completion.

Capital is going into fewer, larger, higher-conviction deals, and buyers are looking harder before they commit. PwC expects that concentration to persist , with values staying high relative to volumes as investors deploy capital selectively. Tax uncertainty can amplify hesitation at the margin, but selectivity is the structural trend, and it will outlast any single Budget.

For sellers, that raises the bar. When buyers are choosier and diligence runs deeper, preparation isn’t just about being ready to launch. It’s about being ready to withstand scrutiny.

Where we fit

I’m not a tax advisor, and I won’t tell anyone when to launch. That’s your call and your client’s. What my team at Ansarada provides is the deal infrastructure underneath it: a secure virtual data room, and a team who spend every day speaking with UK dealmakers about UK processes.

The practical point is this. A mandate waiting on a Budget, or any other source of uncertainty, doesn’t have to sit still. You can open a preparation room now, use the free preparation period (up to 90 days) to get documents organised and diligence-ready, and find the gaps before a buyer does. When clarity arrives and your client gives the green light, the room is ready to go live, not ready to start.

Comparing notes

This Budget will settle some questions and raise new ones, and there will be another fiscal event after it, along with plenty of other reasons to wait. The advisors who move fastest each time are the ones who used the wait to prepare.

If you’ve held a mandate back for the Budget, or pushed to close before it, I’d like to know how it played out and whether you’d time it the same way again. What are you seeing? Let’s talk.