Most people meet a venture capital trust through one number, the upfront income tax relief, and then run into the part nobody explained: the allowance, the rules that claw the relief back, and the fact that selling isn't as simple as it sounds. If you already know roughly what a VCT is, this is the mechanics. If you're weighing it against EIS, the VCT vs EIS comparison sits next door, and the still worth it piece argues the post-2026 case. This one stays neutral and just shows you how the thing operates.
The point of reading it first is simple. The relief is real money, and so is the way it can be taken back. Get the allowance, the holding period and the exit straight before any of the rest matters.
The relief is the easy part. The rules that keep it, and the exit, are where people get caught.
What is a VCT, and what makes it different?
A VCT is a company quoted on the London Stock Exchange that pools investors' money and runs a portfolio of small, early-stage UK trading companies, most of them unquoted or on AIM. You buy shares in the trust itself, not in any of the businesses it backs. That's the difference that shapes everything else: one purchase gives you a spread across a managed portfolio, and a professional team does the picking.
It also means a VCT behaves like a fund, not a direct stake. EIS, by contrast, puts your money straight into individual companies you choose. The structures lead to different rules on relief, tax and exit, which is why the side-by-side with EIS is worth a look if you're choosing between the two. From here on this piece is about the VCT alone: how much you can put in, what you get back, the two rules that bite, and how you eventually get your money out.
What is the VCT allowance, and what relief do you get?
You can put up to £200,000 into newly issued VCT shares in a tax year and qualify for 20% income tax relief on it, the rate that applies from 6 April 2026, down from 30%. The relief works as a reduction of your income tax bill for the year, so on the full allowance that's up to £40,000 knocked off what you owe.
One limit sits underneath the headline. The relief can never exceed the income tax you actually owe that year. Put in £200,000 but only owe £25,000 of income tax, and £25,000 is all you can reclaim; the rest of the relief is simply lost, not carried forward. The relief also only applies to new shares you subscribe for, per HMRC's guidance for investors, not to VCT shares you buy second-hand on the market.
So what happens if you exceed the allowance? Nothing dramatic. Amounts above £200,000 in a single year just don't attract income tax relief. The investment is still valid and still owns the other features; you only forgo the relief on the excess.
What are the VCT 5-year rule and the six-month rule?
Two rules can take the relief away. The first is the five-year minimum holding period: you have to hold the shares for five years from the date you subscribe, or HMRC claws the income tax relief back. Sell after three years and the relief on those shares goes. The HMRC Venture Capital Schemes Manual sets out how the relief is withdrawn when shares stop qualifying inside that window.
The second is the six-month rule, which exists to stop people refreshing their relief by selling and rebuying the same trust. If you subscribe for new shares in a VCT within six months of disposing of shares in that same VCT, the relief on the new subscription is restricted, again under the VCM manual. A VCT buying back your shares and then selling you fresh ones inside six months is caught the same way. The fix is straightforward: if you want to recycle into the same trust, leave a clear six months between the sale and the new subscription, or move to a different VCT.
Are VCT dividends and gains tax-free?
Yes, with one important exception. Dividends from VCT shares are tax-free: no income tax on them, within the £200,000 bought-per-year limit, for both newly issued shares and ones you hold from before, per GOV.UK. For an investor who wants income rather than a one-off relief, this is usually the feature that does the most work over time.
On capital gains, a disposal of qualifying VCT shares is exempt from CGT, and unlike the income tax relief there's no minimum holding period for the CGT exemption, as set out in HMRC helpsheet HS298. Sell at a profit and the gain isn't taxed.
The exception runs the other way. Because gains are exempt, losses on VCT shares are not allowable: there's no loss relief to set against other income or gains if the shares fall. EIS has loss relief; a VCT doesn't. On a high-risk holding, that missing cushion is worth keeping front of mind.
How do you sell VCT shares, and what does it cost?
The realistic exit is selling your shares back to the VCT's own manager through a share buy-back, usually at a discount to net asset value (NAV) of, very roughly, 5% to 10%, though it varies by trust. The open secondary market for VCT shares exists but is thin, and prices there tend to be worse, so most investors use the buy-back. One quirk to know: if you buy VCT shares second-hand rather than at a new issue, you get the tax-free dividends and the CGT exemption, but not the upfront income tax relief, which only attaches to new shares you subscribe for.
On costs, VCTs carry charges like any managed fund: an annual management fee, often a performance fee, and initial costs on a new subscription. These vary widely between trusts and they eat into returns over the five years, so they're worth reading in the prospectus before you commit.
A note on what this isn't. None of the above is a recommendation to use a VCT or a nudge away from one. A VCT puts your capital at real risk, it's invested in small companies that can fail, there's no FSCS protection against investment loss, and the relief depends on rules that move at every Budget. The five-year clawback and the limited exit are features of the product, not deterrents. Confirm the current figures in HMRC's VCT guidance and take FCA-regulated advice before you put money in. For the wrapper comparison, see VCT against an ISA and a pension; for the inheritance tax question, what VCT relief does and doesn't cover.
Frequently asked questions
How much can you invest in a VCT?
Up to £200,000 a year qualifies for income tax relief on newly issued VCT shares. You can put in more than that, but you get no income tax relief on the amount above £200,000. The excess investment is still valid and still gets tax-free dividends and the CGT exemption; it just doesn't attract the upfront relief.
What is the VCT 5-year rule?
You must hold your VCT shares for at least five years from the date you subscribe, or HMRC reclaims the income tax relief you got on them. Sell before the five years are up and the relief on those shares is clawed back. The other features, tax-free dividends and the CGT exemption, are not tied to the five-year period.
What is the six-month rule for VCTs?
Income tax relief is restricted if you subscribe for new shares in a VCT within six months of selling shares in the same VCT. It is an anti-recycling rule: it stops you refreshing your relief by selling and rebuying the same trust. Leaving a clear six months between a sale and a new subscription, or using a different VCT, avoids it.
How do you sell VCT shares?
Usually you sell them back to the VCT's manager through a share buy-back, typically at a discount to net asset value. The open secondary market exists but is thin, so the buy-back is the practical route for most investors. Note that VCT shares bought second-hand carry the tax-free dividends and CGT exemption but not the upfront income tax relief, which only applies to new shares you subscribe for.
Is this article financial advice?
No. This is general information about how venture capital trusts work, not financial advice and not a recommendation to use one. A VCT carries real capital risk, has no FSCS protection against investment loss, and the relief is clawed back if you do not hold for five years. The rules change at Budgets. Confirm the current position at GOV.UK and take advice from an FCA-regulated adviser before committing any money.