The pension I didn't start until I was forty-one

There is a specific conversation that happens in accountants' offices every January, and it goes roughly the same way every time. The self-employed client has had a good year. The tax bill is bigger than expected. Somebody says the word "pension", and the client says the thing they always say: I've got the business. The business is my pension.

It is not an unreasonable position. It is just an unhedged one, and most people holding it have never sat down and worked out what it actually requires the business to be worth on a particular date, or what happens if that date arrives and the business is worth considerably less than the plan needed.

The awkward truth is that going self-employed removes you from a system that was built specifically because people do not do this voluntarily. An employee gets auto-enrolled, contributes without deciding to, and receives an employer contribution on top. A sole trader gets none of that. There is no default. There is only a decision that has to be actively made, and which is very easy to postpone for fifteen years.

What actually gets missed

Two separate things, and people tend to conflate them.

The first is the private pension — the pot you build yourself, into a personal pension or a SIPP. Nobody sets this up for you and nobody chases you about it.

The second is the State Pension, which depends on your National Insurance record rather than on saving anything. The full new State Pension is £241.30 a week in 2026/27, which is a little under £12,548 a year, and you generally need 35 qualifying years to get the full amount. That is not a fortune, but it is index-linked income for life and it is worth knowing whether yours is on track.

For most self-employed people the NI record now looks after itself. Compulsory Class 2 National Insurance was abolished from April 2024: if your profits are above the Small Profits Threshold — £7,105 in 2026/27 — you get the qualifying year credited without paying Class 2 at all. The trap is at the bottom end. Below £7,105 you get nothing automatically, and you would need to pay voluntary Class 2 at £3.65 a week, roughly £190 a year, to buy the qualifying year. Anyone with a low-profit year, a start-up year, or a side business run alongside something else should check whether that year counted.

Class 4 National Insurance, which is the big one you actually pay, builds no State Pension entitlement at all. It is a tax with a National Insurance name on it.

The relief is the bit people underestimate

Here is the part that changes the arithmetic, and it is why "I'll do it when I've got spare money" is such an expensive instinct.

Pay £800 into a personal pension as a sole trader and the provider claims 20% basic rate relief at source, so £1,000 lands in the pot. If you are a higher rate taxpayer, you claim the further relief through Self Assessment, which is typically another £200 back on that £1,000 — so £1,000 invested has cost you £600 net.

The annual allowance is £60,000, or 100% of your relevant earnings if lower — and for a sole trader, that means your trading profits. You cannot contribute more than you have earned. If you have had lean years while being a member of a pension scheme, carry forward lets you use unused allowance from the previous three tax years, which is genuinely useful in a business with lumpy profits: a bad year, a bad year, then a very good year, and the good year can absorb rather more than £60,000.

That structure suits self-employment far better than a fixed monthly direct debit does. The instinct is to set up £200 a month and feel organised. The better instinct, for most owners, is a modest standing contribution plus a deliberate decision each year once the accounts are done and you can see what the year actually was.

What starting at forty-one costs you

Take an illustrative case, and treat the numbers as arithmetic rather than a forecast.

Two sole traders both put £400 a month into a pension, both get basic rate relief so £500 a month goes in, and both see 5% a year growth after charges. One starts at thirty. One starts at forty-one.

By sixty, the one who started at thirty has contributed for thirty years and has roughly £416,000. The one who started at forty-one has contributed for nineteen years and has roughly £190,000. The difference in what they personally paid in is £52,800. The difference in outcome is around £226,000.

The person starting at forty-one who wants to land in the same place has to find something closer to £900 a month. That is the actual cost of the eleven years, and it is why the answer to "should I start small now or properly later" is almost always start small now.

The business-is-my-pension problem

It is worth being fair to the argument. Money left in the business can be doing something — funding stock, buying equipment, growing the thing that generates the profits in the first place. Nobody should be putting £1,000 a month into a SIPP while paying 30% for a merchant cash advance to cover the wages.

But there is a concentration problem that owners underrate because they live inside it. Your income comes from the business. Your capital is in the business. Increasingly your identity is in the business. If it has a bad three years, everything moves in the same direction at once, and the pension is the only part of your finances that is genuinely somewhere else.

And the exit is less reliable than the plan assumes. Businesses that sell for a life-changing multiple are the ones that are documented, systemised and not dependent on the owner, which is a different business from the one most people are actually running — what a buyer works out before you do is worth reading with your own numbers in front of you. Plenty of profitable small firms are worth very little to anybody else. That is not a failure. It just means the pension has to do more of the work.

The version that actually gets done

The thing that gets people started is not a spreadsheet. It is making the decision small enough to be uncontroversial and then automating it.

Set up a personal pension or a SIPP this month — it is a half-hour job online. Start at whatever figure you would not notice going out, even if it is £150. Get it out of the business account on a standing order dated the day after you normally get paid, not the day before. Then add a single line to your year-end routine: when the accounts are finalised and you can see the profit and the tax position, decide on a one-off top-up. Some years it will be nothing. Some years it will be several thousand and will take a visible bite out of the January bill.

One caveat that matters. Check your State Pension forecast and NI record on GOV.UK before you do any of it, because if you have gaps in years where profits were low, filling those may be better value per pound than anything else on this page. It takes about ten minutes.

Nobody is going to auto-enrol you. That is the whole point, and it is also the whole problem.

Common questions

How much can I put into a pension as a sole trader?

The annual allowance is £60,000 in 2026/27, but for a sole trader there is a second cap that usually bites first: you can only get tax relief on contributions up to 100% of your relevant earnings, which for the self-employed means your trading profits for the year. So profits of £38,000 means £38,000 is your effective ceiling, not £60,000. If you have been a member of a pension scheme in the previous three tax years and did not use your full allowance in them, carry forward lets you use that unused allowance in a later year — useful for a business with volatile profits, though the 100%-of-earnings limit still applies in the year you actually contribute.

Is a pension better than just leaving the money in the business?

They do different jobs, and the honest answer is usually both rather than either. Money retained in the business is working capital and growth capital, and starving the business to fund a pension is a poor trade if the business has genuine, high-return uses for the cash. What a pension provides is diversification: an asset that is not correlated with your own trading, in a tax wrapper, that a bad three years in your sector cannot touch. The realistic version for most owners is a modest regular contribution that never competes with operating needs, topped up in the good years once the accounts are done and the profit is actually visible.

Do I still build up a State Pension if I'm self-employed?

Yes, provided your profits are high enough. Since compulsory Class 2 National Insurance was abolished in April 2024, self-employed people with profits above the Small Profits Threshold — £7,105 in 2026/27 — are credited with a qualifying year without paying Class 2 at all. Below that threshold nothing is credited automatically, and you would need to pay voluntary Class 2 at £3.65 a week to secure the year. You generally need 35 qualifying years for the full new State Pension of £241.30 a week. It is worth checking your record on GOV.UK, because low-profit or start-up years are exactly where gaps appear.

When can I actually get the money out?

The normal minimum pension age is 55, rising to 57 in April 2028 — so anyone reaching 55 after that date will need to wait the extra two years. At that point you can usually take up to 25% of the pot tax free, with the rest taxed as income when you draw it. The illiquidity is the real trade-off for a business owner, and it should be a conscious one: money in a pension is not available for a VAT quarter that has gone wrong or an opportunity that appears in March. That is an argument for keeping a proper cash buffer in the business alongside the pension, not an argument against having the pension.