Last updated: August 2026 | Tax year 2026/27
Pension planning tends to focus entirely on SIPPs and private saving, and skips over something that’s often better value than anything a SIPP provider can offer: filling gaps in your State Pension record. For self-employed people especially — where profits can dip below the threshold that triggers automatic National Insurance credit — this is worth checking before anything else.
This is general information, not personal advice. Whether filling a gap actually benefits you depends on your own National Insurance record, so check your State Pension forecast before paying anything.
How the State Pension actually works
The new State Pension pays £241.30 a week (around £12,548 a year) in 2026/27, provided you have 35 qualifying National Insurance years. You need a minimum of 10 qualifying years to receive any State Pension at all, and the amount scales between 10 and 35 years.
A “qualifying year” isn’t about how much you earned — it’s about whether you paid or were credited with enough National Insurance in that tax year, regardless of whether you were employed, self-employed, or receiving certain benefits.
Why self-employed people are more likely to have gaps
If you’re employed and earning above a certain threshold, National Insurance is deducted automatically and the year counts without you thinking about it. Self-employed, it’s less automatic:
- If your profits are above the Small Profits Threshold (£7,105 in 2026/27), you’re credited with a qualifying year without having to do anything extra.
- If your profits fall below that threshold — a slow year, a business just starting out, a year split between employment and self-employment — you aren’t automatically credited, and that year can become a gap unless you act.
This is genuinely common for self-employed people with variable income, and it’s easy to not notice until years later, when the gap is harder or more expensive to fix.
The two ways to fill a gap
Voluntary Class 2 — available if you were registered as self-employed in the gap year and your profits were below the Small Profits Threshold. Costs £3.65 a week (£189.80 for a full year) in 2026/27 — a genuinely small amount for a full qualifying year.
Voluntary Class 3 — the fallback if Class 2 doesn’t apply (for example, if you weren’t registered as self-employed that year, or were abroad). Costs £18.40 a week (£956.80 for a full year) in 2026/27 — around five times the cost of Class 2, though still generally considered good value relative to what it buys.
If you’re eligible for Class 2 for a particular gap year, it’s very rarely worth paying Class 3 instead.
Is it actually worth it?
Each qualifying year adds roughly £330-360 a year to your State Pension for life (the exact figure moves slightly with annual uprating). At the Class 2 rate, that means a single year’s contribution can pay for itself within a matter of months once you reach State Pension age. Even at the considerably higher Class 3 rate, the payback typically happens within a few years of retirement — and State Pension income continues for as long as you live, so the total return over a normal retirement is generally many times the original cost.
The main circumstances where it’s not worth paying:
- You already have, or are on track to reach, 35 qualifying years without the gap year in question
- You’re not going to reach the 10-year minimum even with the gap filled, and have no realistic path to doing so
This is exactly why checking your forecast first matters — paying to fill a gap that wouldn’t actually increase your pension is money spent for nothing.
How to check and act
- Check your State Pension forecast at gov.uk — this shows your current qualifying years, any gaps, and what filling them would add to your pension.
- Confirm eligibility for Class 2 vs Class 3 for the specific gap year — this depends on your self-employment status and profit level in that year, not your current situation.
- Act inside the time window — gaps can generally be filled going back six tax years on a rolling basis, following the closure of a longer, temporarily extended window in April 2025. Older gaps may fall outside what you’re able to fill, so it’s worth checking sooner rather than later if you suspect there are gaps further back.
Where this fits with everything else
The State Pension alone — even at the full rate — is unlikely to fund the retirement most people want, which is exactly why the SIPP and ISA planning covered elsewhere on this site still matters. But because filling a genuine gap is often the highest-return pound-for-pound action available, it’s worth doing this check before assuming your private pension needs to do all the work.
This article is for general information only and does not constitute financial advice. National Insurance rules, rates, and thresholds can change — check gov.uk for current figures and your own State Pension forecast before paying voluntary contributions. Speak to a qualified adviser if your situation involves time spent abroad or a mixed employment history.