Accountant for Convenience Stores: What One Trading Week Does to Your Tax

Marta runs a convenience store on a main road out of Doncaster. She opens at six, closes at ten, and by the time she cashes up on Sunday night her till has taken money at two different VAT rates, handed out money that was never hers, thrown away food she paid for, and paid four members of staff across ninety hours of opening. None of that is unusual. What is unusual is a set of accounts that reflects any of it accurately.

One trading week, line by line

Here is Marta's week as her till, her delivery notes and her staff rota record it.

What happens	The week	What it does to the accounts
Zero-rated sales through the till (bread, milk, most groceries, newspapers)	£4,200	Turnover, no output VAT, but still counts towards the VAT registration threshold
Standard-rated sales through the till (confectionery, crisps, soft drinks, hot food, alcohol, tobacco)	£7,800 including VAT	£1,300 of output VAT, £6,500 of turnover
Money through the lottery terminal, PayPoint and the parcel point	£6,000	Not turnover at all. Only the £180 commission is yours
Deliveries in (four cash-and-carry runs, two symbol-group drops)	£8,300	Purchases, and the input VAT on the standard-rated part is reclaimable
Wastage: date-expired chilled and bakery lines binned	£210	Stays in cost of sales, but needs a record
Shrinkage: the gap between what the shelves say and what the till took	£95	Not a cost you post, a difference you investigate
Staff hours across a 90-hour opening week	£885 gross	Payroll, employer National Insurance contributions, auto-enrolment pension
Paperwork: banking, terminal reports, delivery notes, the till Z-reads	About two hours	The only evidence that any of the above happened

Every row in that table is a tax decision in disguise. The next four sections take the four that go wrong most often.

The till total is not one number

A grocery-led store sells at more than one VAT rate all day. Most food sold to take away and eat later is zero rated. Confectionery, crisps, soft drinks, ice cream, hot food, alcohol and tobacco are standard rated at 20%. That means the £7,800 of standard-rated takings in Marta's week carries VAT of one-sixth, £1,300, and produces £6,500 of turnover, while the £4,200 of zero-rated takings produces £4,200 of turnover and no VAT at all.

If your electronic point of sale (EPOS) system is properly programmed, it splits that at the till and you know the answer at the end of every day. If it is not, you need one of the retail VAT schemes to work the split out from your purchases or your expected selling prices instead. That choice materially moves the VAT bill, and it is a calculation rather than a preference. The arithmetic for point of sale, apportionment and direct calculation, with the turnover gates that decide which ones you can use, is set out in full on our retail VAT schemes page. Read that before you choose; treat this page as the trade, that page as the mechanism.

One threshold point catches grocery-led stores out. You must register for VAT once taxable turnover passes £90,000 in any rolling 12 months, and taxable turnover includes zero-rated sales. Zero rated is not the same as exempt. Marta's bread and milk count towards the threshold even though they carry no VAT, which is why almost every convenience store of any size is registered. The deregistration threshold is £88,000.

Lottery, PayPoint and parcels are commission, not sales

This is the single most common error in the trade, and it is the one that does the most damage.

When a customer tops up their electricity meter for £40 at your PayPoint terminal, that £40 is not your money and never was. You are acting as an agent for the operator. The same is true of lottery sales, mobile top-ups, parcel drop-offs and collection points. Your income on those lines is the commission the operator pays you, and nothing else. Marta's £6,000 a week of concession throughput is £312,000 a year of money moving through her store, and £9,360 a year of actual income.

Record the throughput as turnover and three things break at once. Your reported turnover is overstated by a third of a million pounds, so your gross margin looks catastrophic and your accounts tell you nothing. Any retail VAT scheme that apportions takings is fed a number that is not takings, so the apportionment is wrong. And the VAT registration test, which is a test of taxable turnover, is answered on the wrong figure entirely: a small newsagent nowhere near £90,000 of real sales can convince itself it must register because the terminals moved a lot of other people's money.

Whether a particular commission is standard rated or exempt for VAT depends on what the concession contract says you are supplying, and the contracts differ between operators. That is a question to settle with the agreement in front of you rather than by analogy with the shop next door. What does not vary is the principle: agent, so commission only.

Wastage and shrinkage are two different problems

Wastage is stock you bought and then binned: the sandwiches that went out of date, the bread that did not sell, the chilled line that failed on temperature. It has already been paid for and it is already in your cost of sales, so there is no separate deduction to claim. What it needs is a record, because a store with an unexplained 8% gross margin and no wastage log has no answer if HMRC asks why its margin sits so far below what its purchase mix implies.

Shrinkage is different. It is the difference between what your stock records say you should have sold and what your till says you did sell, and it is a symptom rather than a cost. It can be theft, staff error, mis-keyed till buttons, or a promotional multi-buy nobody told the EPOS system about. The reason it matters for tax is that shrinkage and a mis-set VAT rate at the till look identical in the accounts, and only one of them is a stock problem.

Both meet the year-end stock figure, which is the number that decides your taxable profit more than any other single entry. Stock is valued at the lower of cost and net realisable value, counted rather than estimated, and a count that happens on a Sunday night when the shop is shut is worth more than a spreadsheet built backwards from a target margin.

Four part-timers across ninety hours

Long opening means several people rather than one, and several people means payroll rather than a single wage. Employer National Insurance contributions run at 15% on earnings above the secondary threshold of £5,000 a year, with effect from 6 April 2025. The Employment Allowance, £10,500, offsets that bill for a business with genuine non-director staff, and for a store the size of Marta's it usually wipes it out completely. That is a real saving, and it is claimed rather than given.

Auto-enrolment applies to eligible staff aged 22 to State Pension Age earning above the £10,000 earnings trigger. Contributions run on qualifying earnings, the band from £6,240 to £50,270, at a minimum total of 8%, of which you as employer pay at least 3%. Those are the 2025/26 figures and they were still current when this page was checked in August 2026. Part-time shop staff frequently sit either side of the trigger, and someone whose hours creep up over a summer can become eligible without anybody noticing.

Real Time Information reporting is due on or before each payday, not at the month end, and late filing carries a monthly penalty starting at £100 for an employer with one to nine employees.

The week scaled to a year, taken to a tax bill

Take Marta's week, multiply it by 52, and run it down to taxable profit. She trades as a sole trader. Every line below is derived from the figures printed on this page.

Turnover

• Zero-rated sales: £4,200 x 52 = £218,400
• Standard-rated takings: £7,800 x 52 = £405,600 including VAT. Output VAT at one-sixth = £67,600. Net sales = £338,000
• Turnover for the accounts: £218,400 + £338,000 = £556,400
• Concession commission (separate from sales): £180 x 52 = £9,360

Cost of sales

• Opening stock £28,000 + purchases £432,000 - closing stock £30,000 = £430,000
• Gross profit on sales: £556,400 - £430,000 = £126,400, a gross margin of 22.7%
• Total income including commission: £126,400 + £9,360 = £135,760

Overheads

• Wages, four part-time staff at £13,000, £12,000, £11,000 and £10,000: £46,000
• Employer National Insurance contributions: 15% of the excess of each wage over £5,000, so 15% x (£8,000 + £7,000 + £6,000 + £5,000) = 15% x £26,000 = £3,900, fully covered by the £10,500 Employment Allowance: £0
• Employer pension at 3% of qualifying earnings: each wage less £6,240, taking the fourth member of staff, on exactly £10,000 and so below the earnings trigger, as someone who has opted in, so £6,760 + £5,760 + £4,760 + £3,760 = £21,040, at 3% = £631.20, carried into the total below as £631 (rounded)
• Rent and business rates: £24,000
• Utilities, chillers running around the clock included: £9,600
• Insurance, card processing, EPOS support, licence, accountancy, repairs and sundries: £11,000
• Total overheads: £46,000 + £0 + £631 + £24,000 + £9,600 + £11,000 = £91,231

Profit and tax

• Profit before capital allowances: £135,760 - £91,231 = £44,529
• Capital spend in the year: new chiller cabinets and shopfit £18,000, plus a second-hand EPOS terminal set at £2,000. Both qualify for the Annual Investment Allowance, so £20,000 is relieved in full: £20,000
• Taxable profit: £44,529 - £20,000 = £24,529
• Income tax: (£24,529 - £12,570 personal allowance) = £11,959 at 20% = £2,391.80
• Class 4 National Insurance contributions: £11,959 at 6% = £717.54
• Total: £3,109.34

The income tax bands and the Class 4 rate used above are the 2025/26 figures, still current when this page was checked in August 2026. Scotland sets its own income tax bands, so a Scottish store owner runs the same computation with different rates in the last two lines.

Two things follow from that computation. First, £556,400 of turnover produced a tax bill of a little over £3,000, which is why judging a convenience store by its takings tells you nothing at all. Second, the two lines doing the most work are closing stock and the capital allowance claim, and both of them are records rather than opinions. Get the stocktake wrong by £5,000 and the tax bill moves by £1,300.

Chillers, shopfit and EPOS: what the capital spend gets you

Refrigeration is the biggest single capital item most stores buy, and the rules changed recently enough that stale advice is still circulating.

The Annual Investment Allowance gives 100% relief on up to £1,000,000 of qualifying plant and machinery per 12-month period. It covers new and second-hand kit, it is available to sole traders and companies alike, and it is use-it-or-lose-it: it cannot be carried forward. For most convenience stores it does the whole job on its own, as it does in Marta's computation above.

Two other rules sit behind it. From 1 January 2026 there is a 40% first-year allowance on new and unused main-rate plant and machinery, available to companies and unincorporated businesses. And the main-rate writing-down allowance, which relieves whatever is left in the pool, falls from 18% to 14% from 1 April 2026 for companies and 6 April 2026 for income tax, with a straddling period using a hybrid rate. Integral features, which is where your electrical rewiring, lighting, heating and ventilation land, sit in the special rate pool at 6%.

The practical points for a shop are these. A new chiller run bought outright is normally best relieved through the Annual Investment Allowance at 100%, not the 40% first-year allowance, because the 40% version leaves the balance in the pool to unwind at 14% a year. Second-hand equipment cannot use the 40% allowance at all, but the Annual Investment Allowance still covers it. And a refit that mixes movable equipment with rewiring needs the two split, because they attract different rates.

The dates a shopkeeper actually has to keep

If you started trading as a sole trader, register for Self Assessment by the 5 October following the end of your first tax year. The online return and the balancing payment are both due by 31 January after the tax year ends. Where your income tax and Class 4 liability for a year exceeds £1,000 and less than 80% of it was collected at source, you also make two payments on account towards the following year, each 50% of the prior year's liability, due on 31 January and 31 July.

On Marta's £3,109.34, that means £1,554.67 on 31 January and the same again on 31 July, on top of the balancing payment for the year just gone. The first year of trading is where this bites: the balancing payment and the first payment on account fall on the same 31 January, so the bill is roughly one and a half times what a first-timer expects.

VAT returns run on their own cycle, and Making Tax Digital for VAT has applied to every VAT-registered business since April 2022, so digital records and compatible software are not optional whatever your turnover.

A store selling alcohol or tobacco also carries licensing and excise obligations that sit outside the tax computation above; the relevant guidance is on gov.uk.

Buying a convenience store: what you are actually buying

The listings that come up when you search for a shop to buy are written by business-transfer agents, and they are selling. The tax questions sit underneath the asking price and they start with one fork: are you buying the business, or are you buying the company that owns it?

An asset purchase means you buy the trade and its assets: goodwill, fixtures and fittings, and stock at valuation. Stock at valuation means exactly that, a stocktake on the morning of completion with the price settled on the count, which is why the headline price and the money you actually hand over are never the same figure. You get a clean start: the seller's history, their PAYE record and any latent liabilities stay behind them. You are also starting a new business for tax purposes, with a new VAT registration unless the transfer qualifies as a going concern, and new payroll registrations.

A share purchase means you buy the limited company itself, and everything it has ever done comes with it, good and bad. The trade continues uninterrupted, the leases and licences usually stay put, and the price reflects the risk you are inheriting, which is why buyers pay for due diligence and negotiate warranties.

The choice drives three tax consequences. Fixtures you buy second-hand can attract the Annual Investment Allowance but not the 40% first-year allowance, which requires new and unused plant, and where fixtures come with a building there is a joint election with the seller that fixes the value transferred and has a two-year time limit. Goodwill you buy as a sole trader gets no annual deduction at all; it is capital, and it sits as base cost until you sell. A company buyer may get relief on purchased goodwill through the corporate intangibles regime, but only at a fixed 6.5% a year, only where the goodwill is acquired alongside qualifying intellectual property, and capped at six times that qualifying spend, so it is far narrower than it sounds.

Selling the shop: the tax side of the exit

Selling as a sole trader is a capital gains tax event. You are disposing of goodwill, and possibly the premises if you own the freehold. The main capital gains tax rates are 18% within your basic-rate band and 24% above it, with an annual exempt amount of £3,000.

Business Asset Disposal Relief reduces the rate on qualifying business disposals, up to a £1,000,000 lifetime limit per person that has been fixed since March 2020. The rate matters and the date matters more: 10% for disposals up to 5 April 2025, 14% for disposals between 6 April 2025 and 5 April 2026, and 18% for disposals from 6 April 2026. The qualifying conditions have to have been met throughout the two years to disposal, which for a share sale means holding at least 5% of the ordinary share capital and voting rights and being an officer or employee throughout, and for a sole trader means disposing of the business or of qualifying assets on cessation.

If the shop is inside a limited company, the fork reappears from the seller's side. On a share sale you make one disposal and Business Asset Disposal Relief is potentially in play. On an asset sale the company sells its assets, pays corporation tax inside the company on any gains and balancing charges, and you then face a second tax layer extracting what is left, whether by dividend or through a liquidation. Corporation tax runs at 19% where augmented profits do not exceed £50,000 and 25% above £250,000, with marginal relief tapering between the two at an effective rate of about 26.5% in the band, and the limits are divided between associated companies. Buyers generally prefer assets and sellers generally prefer shares, which is why the split of the price between the two is negotiated rather than obvious. Model both before you accept an offer, not after.

What decides what a shop is worth

We do not publish valuation multiples, because a multiple applied to the wrong profit figure is worse than no answer. What we can tell you is what a serious buyer looks at, and every item on the list is something you can improve in the eighteen months before you market the shop.

• Adjusted, sustainable profit. Not takings. A buyer strips out your own drawings, adds back anything personal you have run through the business, and asks what the shop earns for an owner who works the same hours you do.
• Whether the figures can be proved. Till Z-reads that reconcile to the bankings, delivery notes that reconcile to purchases, and a wastage log. A shop whose declared profit cannot be traced through its own records is discounted, not because the buyer thinks you are lying but because their funder does.
• The lease. Length of unexpired term, rent review pattern, security of tenure and any personal guarantee. A short lease caps the price whatever the profit says, and a freehold is a separate asset with its own capital gains treatment.
• How much of the income is concession commission, and how durable those contracts are. Commission income is real income, but it depends on agreements you do not control.
• The mix. A store leaning on tobacco, which is high turnover and thin margin, prices differently from one leaning on chilled food and food to go.

The tax consequence is the same either way: a cleaner set of records raises the price and lowers the friction, and it is the same discipline that makes the VAT return right every quarter.

Which page to read next

If you want the wider retail picture rather than the convenience-store specifics, start with our retail shop accounting page. If the question you actually came with is which retail VAT scheme to use, go straight to the retail VAT schemes page, where the three schemes are worked through with their turnover gates. And if you are within a year of buying or selling a shop, talk to us before you sign heads of terms rather than after, because the split of the price between goodwill, fixtures and stock is a tax decision and it is very hard to revisit once the contract is drawn.