Every Scottish client's Self Assessment return carries two facts that rarely get read against each other: a tax code with an S prefix, and a personal pension contribution sitting in the reliefs section. The tax code says the client pays income tax at one of six Scottish rates. The contribution says a pension provider has already added tax relief to it — at a flat 20%, regardless of which of those six rates actually applies. For a basic-rate client the two numbers happen to match. For almost everyone else, they don't, and the difference is money HMRC will only pay if somebody asks for it.
This is not an error anyone made. It is what happens when two governments control the two halves of one calculation. Income tax on earnings, self-employment profit and rental income has been partly devolved to the Scottish Parliament since April 2018, and Holyrood now sets six bands where the rest of the UK has three. Pension tax relief has not moved: it remains reserved to Westminster, and HMRC's relief-at-source mechanism was built around one basic rate of 20% for the whole of the UK. Nobody redesigned it when Scotland's bands multiplied, so the 20% simply keeps being added, correct for some clients and short for most of the rest.
The six bands for 2026-27, and what each one is owed
Scotland's rates and bands for 2026-27, confirmed in the Scottish Government's technical factsheet on Scottish Income Tax, are:
- Starter rate — 19% on income from £12,571 to £16,537.
- Basic rate — 20% on income from £16,538 to £29,526.
- Intermediate rate — 21% on income from £29,527 to £43,662.
- Higher rate — 42% on income from £43,663 to £75,000.
- Advanced rate — 45% on income from £75,001 to £125,140.
- Top rate — 48% on income above £125,140.
A relief-at-source pension provider adds 20% to every one of those clients' contributions, without exception. Set that flat 20% against the six bands above and the extra relief due on top of it, confirmed in the same factsheet, comes out as: nothing for basic rate, because the two already match; 1% for intermediate rate; 22% for higher rate; 25% for advanced rate; and 28% for top rate. Starter-rate taxpayers sit on the other side of the line entirely — they keep the extra 1% they were never entitled to on paper, because HMRC does not claw it back and the Scottish Government absorbs the cost instead.
Putting a number on it
Take a composite, illustrative client — not a real one. A Scottish taxpayer earning £70,000 sits in the 42% higher-rate band. They pay £8,000 net into a SIPP during the year, which is a relief-at-source scheme. The provider grosses this up at the fixed 20/80 basic rate: £8,000 × 20/80 = £2,000 of automatic relief, so £10,000 lands in the pension. Nobody has done anything wrong yet. But the client's actual rate is 42%, twenty-two points above the 20% the provider used, and that 22% of the £10,000 gross contribution — £2,200 — is relief the client is owed and will not receive unless it is claimed through Self Assessment.
Claimed, the client's true cost of a £10,000 pension contribution falls from the £8,000 they actually paid to £5,800, once the extra £2,200 comes back as a Self Assessment reduction or refund. Missed, the £8,000 net cost simply stands, silently, as if the client were a basic-rate taxpayer who happened to pay double the relief everyone assumes they are entitled to. Multiply that by every year the return is filed without the check, and a client who has been a higher-rate Scottish taxpayer for five years and never claimed it has left roughly £11,000 unclaimed — some of it now outside HMRC's four-year window for good.
The 20% a relief-at-source provider adds is not a Scottish number. It is the only number the system knows how to add, for every saver in the UK — which is exactly why nobody except the person preparing the Scottish return is in a position to correct it.
Which schemes this touches, and which it doesn't
The gap only exists in relief-at-source schemes: most personal pensions, SIPPs, stakeholder pensions, and a good number of the auto-enrolment master trusts used by smaller employers. A contribution goes in net of basic-rate tax, and the provider reclaims 20% from HMRC on the client's behalf, using the same flat rate for a client in Elgin as a client in Exeter.
Net pay arrangement schemes work the opposite way round. The contribution comes off gross pay before tax is calculated, so PAYE applies the client's real Scottish rate to what is left, automatically, every payday. There is no gap to claim because there was never a shortfall — relief was given correctly at source, at whatever rate the client actually pays. The two arrangements can sit side by side in the same client's paperwork and look almost identical on a payslip, so the first useful question for any Scottish client with a pension contribution on their return is simply which of the two they are in.
Why this lands on the accountant's desk first
Three reasons, all structural rather than a matter of who happens to notice.
You hold both facts already. The Scottish tax code and the gross pension contribution sit on the same Self Assessment return your firm prepares every year. HMRC's system will calculate the correct relief once the figures are entered correctly — the gap exists only where nobody checks the client's actual band against the 20% the provider assumed.
The claim has a shelf life. Overpayment relief can be backdated four years from the end of the relevant tax year, and not a day longer. A client who has quietly been a higher-rate or advanced-rate Scottish taxpayer for a decade cannot recover a decade of missed relief — only the four years still inside the window, which shrinks every 6 April.
Nobody else is looking. The pension provider's system is built to add 20% and stop there; it has no reason to know the client's total income. HMRC does not proactively review returns for underclaimed relief. The check exists only if the person holding both numbers — the accountant — runs it.
Three things to do this week
First, add one line to the pension section of every Scottish client's return: relief at source or net pay. It takes one look at the scheme literature or one call to the provider, and it tells you immediately whether this article applies to that client at all.
Second, where the answer is relief at source and the client's Scottish band is intermediate rate or above, check the return against HMRC's calculation rather than assuming the software has reconciled it. Software applies the correct rate once the right boxes are completed; the boxes only get completed if someone knows to ask the client's actual band, which is not always obvious from a headline salary alone once dividends, rental income or self-employment profit are added in.
Third, for any client where several years appear to have gone unclaimed, work out how much of the four-year window is still open before it closes on the next 6 April. That is a date-driven number your firm can put in front of a client this week, with no FCA permission required to say it.
The wider point about who ever gets asked
The lang cat's State of Advice Report 2025 found that just 9% of UK adults had paid for financial advice in the previous two years, even though 91% of those who did found it valuable. Fewer than 5,000 IFA firms serve that market, the average new client arrives with a portfolio of roughly £411,000, and the average IFA client is 59. A Scottish higher-rate taxpayer actively funding a SIPP is, almost by definition, exactly the kind of engaged saver that population is supposed to include — and a great many of them still sit outside it, simply because nobody who saw the whole picture ever raised the question. We set the shape of that gap out in full on the advice gap, and the accountant's side of the boundary in who does what.
A missed 22% is not a planning conversation on its own. It is the kind of concrete, dated, unarguable number that opens one — and it is a number your firm is already holding, the same way we described for a client's accounts in the six signals already sitting in your client file.
Common questions
Does explaining this gap to a client count as regulated financial advice?
No. Identifying that a client is a Scottish taxpayer, checking whether their pension uses relief at source, and working out the extra percentage they are owed against HMRC's published bands are all arithmetic and tax administration. None of it needs FCA authorisation. The line sits one step further on: telling the client what to do with the refund, how much to contribute this year, or which wrapper suits them is regulated advice, and belongs with an authorised adviser. Raising the number is your firm's job. Deciding what happens to it is Equity & General's. We set the division out in full in our article on who does what.
Which pension schemes actually have this gap, and which don't?
It depends on how the scheme gives relief. Relief-at-source schemes — most personal pensions, SIPPs, stakeholder pensions and many auto-enrolment master trusts — take a contribution net of basic-rate tax and the provider claims 20% back from HMRC, regardless of the saver's actual rate. That flat 20% is where the Scottish gap lives. Net pay arrangement schemes, common in larger employer schemes, deduct the contribution from gross pay before tax is calculated, so relief is given automatically at whatever the employee's real marginal rate is, Scottish or not, with nothing to claim. The two mechanisms look similar on a payslip and behave completely differently. Checking which one a client is in takes one phone call to the provider or one look at the scheme literature.
How does a client actually claim the extra relief, and how far back?
If the client already completes a Self Assessment return, the gross pension contribution goes in the reliefs section and HMRC's calculation applies the correct Scottish rate automatically from that point on — this is usually a data entry your firm already makes, just not always checked against the client's actual band. If the client does not file a return, they can write to HMRC or use its online service to claim the difference. Either route can be backdated using HMRC's overpayment relief rules, which allow claims up to four years after the end of the relevant tax year. After that the four-year window closes and the relief for that year is simply gone, which is what makes a periodic check worth doing rather than a one-off.
Do Scottish starter-rate clients have to repay the extra 1%?
No. A client whose only or highest income tax rate is the 19% starter rate still receives the full 20% automatic relief on a relief-at-source pension contribution, one percentage point more than they paid. HMRC does not claw this back, and the Scottish Government bears the cost of the difference rather than the client. It is the one part of the mismatch that runs in the saver's favour, and it needs no action from the client or your firm — it is worth knowing simply so nobody assumes an adjustment is owed in the other direction for this group.
Does this affect employer pension contributions as well?
No, this gap is specific to an individual's own contributions into a relief-at-source scheme. An employer contribution is paid gross, straight into the pension, with no basic-rate relief added and nothing for the employee to claim — the company simply gets its corporation tax deduction in the normal way. The mismatch only arises where the saver's own money goes in net of tax and a provider grosses it up at the flat UK basic rate. For a director-shareholder who takes a small salary and has the company fund their pension directly, this article has no application at all; it is squarely a personal-contribution, Self Assessment issue.
Where does our firm's role stop and Equity & General's begin?
Your firm can identify the client, check the scheme type, calculate the extra relief against HMRC's published Scottish bands, and make the claim through the return or a letter to HMRC — all of that is accountancy and tax work, not advice. Once the money is back with the client, the next question is usually what to do with it: increase contributions, use it elsewhere, or review the pension itself. That is a suitability question about one person's circumstances, and it needs a regulated recommendation from an authorised firm. In an Altro partnership, your firm makes the introduction and Equity & General carries the advice and the responsibility for it.
Sources: Scottish Government, Scottish Income Tax 2026 to 2027: technical factsheet and Scottish Income Tax: rates and bands, 2026 to 2027; HMRC guidance on tax relief for pension contributions; The lang cat, State of Advice Report 2025. Figures are illustrative and not a recommendation. See how an Altro introduction works.