SEIS After the Latest Budget: What Changed and What Did Not
Where SEIS stands after the Budget: unchanged limits, the 2035 extension next door, the latest HMRC numbers and what to check.
In this article
Budgets move markets and occasionally move SEIS. Here is the SEIS Budget position as it stands after the most recent statement: the core SEIS numbers are unchanged, the company limits of £250,000 and £350,000 and the investor limit of £200,000 all hold, and the scheme remains a permanent fixture rather than one living under a sunset clause.
What did not change, and why that matters
The Autumn 2025 Budget confirmed the pattern: its venture capital changes concentrated on EIS and EMI, and SEIS itself was left untouched. No movement on the SEIS limits themselves. The current settings date from 6 April 2023, when the raise cap went from £150,000 to £250,000, gross assets from £200,000 to £350,000, the trade age from 2 years to 3, and the investor limit from £100,000 to £200,000. Stability is underrated: founders can plan rounds and investors can plan allocations without a moving target.
The adjacent schemes
The EIS and VCT sunset clauses were extended to April 2035, settling the biggest structural question hanging over the wider venture capital scheme family, and industry commentary continues to press for awareness rather than redesign. Where the schemes differ is mapped in SEIS vs EIS vs VCT.
The scheme in numbers
The most recent HMRC release shows SEIS in good health: around 2,430 companies raised £276 million in 2024 to 2025, up 14% on the year before, a rise HMRC links to the 2023 expansion. We track the data, with our own reading, on the SEIS statistics page.
What founders and investors should actually do after a Budget
- Check the source, not the headlines: the Budget red book and gov.uk guidance are the record; commentary is commentary.
- Re-date your assumptions: any deck, model or plan quoting SEIS limits should cite the post-Budget position.
- Watch the tax-year boundary: where rules change, commencement dates decide whether your round or claim sits under old or new rules.
The numbers as they stand
| Limit | Current figure | Since |
|---|---|---|
| Company lifetime SEIS raise | £250,000 | 6 April 2023 |
| Gross assets ceiling | £350,000 | 6 April 2023 |
| Trade age | Under 3 years | 6 April 2023 |
| Investor annual limit | £200,000 | 6 April 2023 |
| Income tax relief | 50% | Scheme launch, 2012 |
How a SEIS Budget change actually lands
Nothing changes on Budget day itself. Announcements travel through the Finance Bill, pick up commencement dates, and typically bite from the following 6 April, sometimes only for shares issued after a stated date. That lag is your friend: it creates a window to take advice, and it means the rules that govern your round are the ones in force on your issue date, not the ones in the headlines. When the 2023 expansion arrived, for instance, it applied to shares issued on or after 6 April 2023, and issues before that date stayed under the old limits.
What we watch at every fiscal event
- The four SEIS limits above, and any commencement language attached to changes.
- The relief rates, 50% income tax and the CGT treatments, which move rarely but matter most.
- Neighbouring schemes: EIS and VCT changes often preview thinking that reaches SEIS a year later.
- CGT rates generally, because they set the value of reinvestment and disposal reliefs.
- Anything touching Business Property Relief and unlisted shares, which changes the estate-planning conversation around long holds.
Between Budgets, the scheme’s health shows up in the data instead, and we keep that reading current on the statistics page.
Reading Budget coverage without being misled
Three habits keep Budget week sane. First, primary documents beat commentary: the red book and the gov.uk guidance pages are the record, and everything else, including this page, is interpretation. Second, find the commencement date before reacting; a change announced in November that bites from next April changes your planning, not your current round. Third, keep the schemes separate in your head: most venture capital scheme headlines concern EIS or VCTs, and readers regularly panic about SEIS over changes that never touched it. The comparison in SEIS vs EIS vs VCT is the antidote.
When this page updates
We refresh this piece after every fiscal event that touches the venture capital schemes, and date the change. If you are reading between events, the figures above are the live position, cross-checked against gov.uk; if a Budget happened this week and this page has not caught up, trust gov.uk first and us second. That ordering is deliberate, and it is the same honesty we apply across every guide on the site.
What to watch at the next statement
Every SEIS Budget cycle repeats the same pattern: rumours in the weeks before, a speech that rarely mentions the scheme, and detail that lives in the annexes published the same afternoon. The reliable method is to ignore the speech and read three things in order: the annex table of rates and allowances, the venture capital schemes section of the policy costings, and any HMRC technical note published alongside.
Three specific numbers matter. The company lifetime limit of £250,000 and the gross asset ceiling of £350,000 would change founder maths immediately if touched. The investor annual limit of £200,000 changes portfolio planning. None has moved since April 2023, and nothing in the most recent statement suggested movement, but the SEIS Budget watch takes ten minutes a year and removes all the second-hand anxiety.
If a change does land, our statistics page and this page will carry the dated update the same week, with the old figures preserved for anyone mid-round under transitional rules.
How past Budgets have treated the scheme
The SEIS Budget track record is unusually calm for a tax relief. The scheme arrived in 2012 as a pilot, was made permanent in 2014, and then ran untouched for nearly a decade. The one substantial change came in April 2023, when the company lifetime limit rose from £150,000 to £250,000, the gross asset ceiling from £200,000 to £350,000, the trade age window from two years to three, and the investor annual limit from £100,000 to £200,000.
That 2023 package remains the high-water mark of generosity, and every statement since has left the numbers alone. The scheme has also been structurally insulated from the sunset anxiety that follows its neighbours: the sunset clause that was extended to 2035 belongs to EIS and VCT, while SEIS has no expiry date to extend.
The practical reading: SEIS Budget risk is real but slow-moving, and changes have historically been generous rather than punitive. Plan rounds on the current numbers, and treat rumours as noise until the annexes say otherwise.
Sources
gov.uk, Apply to use SEIS · HMRC EIS and SEIS statistics · gov.uk, EIS and VCT extension
