Which shared trip / co-working / client-meeting expenses you can actually deduct on your UK Self Assessment return - in plain English, with examples.
I am not your accountant. I have spent two years splitting a co-working desk and a lot of train tickets with another freelancer, and have asked enough questions of an actual accountant to know the rough shape of what counts and what doesn't on a UK Self Assessment return. This article is the practical version of that knowledge - not the legal version.
For anything material, get an actual accountant. They cost £300-£600 a year and save most freelancers more than that in deductions.
Shared expenses are deductible in proportion to your business use. That sounds obvious but the four areas where it gets messy are: co-working desk shares, transport on shared trips, client entertaining where the bill was on someone else's card, and software subscriptions split with a peer. Track who paid what to the penny.
HMRC's rule is: an expense is deductible if it's "wholly and exclusively" for the purpose of the trade. The "wholly and exclusively" phrase has bitten many people - it means the expense must have no significant non-business benefit.
For shared expenses, that translates into a percentage. If you and another freelancer split a £600/month co-working desk and you each use it equally for your own businesses, you each deduct your actual £300 share. If one of you uses it more, the deduction should reflect that.
The key practical question is: can you prove your share with a clear paper trail?If yes, deduct it. If you can't - if it's "I think I paid about £40 of that" - the safe answer is don't deduct.
EvenRound is good at this specifically because each expense has a payer, an amount, and a per-member share that's timestamped and immutable. CSV-export it at year-end and you have a trail.
You and another freelancer rent a private office at a co-working space. Total is £900/month. Each of you uses it 4 days a week for client work, 1 day a week for personal projects.
Deductible per person: £450 × (4/5) = £360/month, or £4,320 a year. The 1 day a week of personal use isn't deductible - that's the "wholly and exclusively" rule biting.
The numbers above assume both freelancers are sole traders / self-employed (no limited company). If you trade through a limited company, the company would pay the rent directly and the rules are different.
Track this in a EvenRound group called something like "Office co-share". Each month, log the rent as paid by whichever of you actually paid the landlord, with the other's £450 share. At year end, export the CSV; you have the receipt trail.
You and your co-freelancer go to Manchester for a joint client meeting. One of you buys a railcard pair return for £180. Both of you use it. The cost is £90 each.
Both of you can deduct your £90 if the trip was wholly and exclusively business. If you stayed an extra day to see family, only the strictly-business portion is deductible.
The mistake we see most: one person buys the tickets and tries to deduct the full £180. They didn't spend £180 - they spent £180 and got reimbursed £90. HMRC sees the bank statement; it sees £180 out and £90 in. The deductible figure is £90.
Bad news first: client entertaining is not deductible in the UK. Full stop. If you take a client out to dinner, that's on you, not on HMRC. (This rule is different in some other countries; in the US it's partially deductible at 50%.)
The exception is staff entertaining (your own employees), which is allowable up to £150 per head per year. As a sole trader you don't have employees, so this doesn't apply.
Where this comes up in shared-expense world: a peer freelancer and you split a dinner with a mutual potential client. Neither of you can deduct the bill, even though both of you derived business benefit. The shared-ness doesn't change the rule.
You and another designer share a Figma Professional account at £15/month per editor seat. You each get one editor seat. You agree to split the £30 total.
Each of you deducts £15. Easy.
Where it gets harder: shared seats on tools that don't map cleanly. You both share one Adobe CC subscription at £52/month. You use it 80% of the time, your peer 20%. The split should be £41.60 / £10.40, not £26 / £26 - even if you actually pay £26 each in cash. The CSV export from your tracker is your evidence of the actual usage split.
Important caveat: if Adobe's licence terms only allow one named user per seat, "sharing" the seat is technically a licence violation. We're describing what happens, not endorsing it.
Three of you share a holiday flat for a week. Two of you spend Wednesday taking a joint client call. The other day-and-a-half you all spend at the beach.
That's probably not deductible at all. The dominant purpose is the holiday. A single client call doesn't convert the trip into a business one.
The rule of thumb: if the trip would have happened without the client call, it's personal. If you genuinely went there purely for work and the leisure was incidental, it might be deductible - but you'd need the boring receipts and itinerary to back it up.
You front a £400 hotel for a client trip in November. The client reimburses you in March. The £400 isn't deductible (the client effectively paid it). The £400 reimbursement isn't income (it's recouping a cost). They cancel out in your books - no net P&L impact. But you do need to keep the receipt and the reimbursement record so HMRC can see why the £400 outflow doesn't reduce your taxable profit.
If you're VAT-registered, you reclaim VAT only on your share of the input cost - not the full receipt. This is where meticulous receipt-keeping pays off.
Worked example: a £120 inc-VAT desk-share invoice (£100 + £20 VAT). You and your co-renter split 50/50. You each pay £60 inc. VAT. You each reclaim £10 of VAT.
If the supplier issued one invoice in your name only, your peer can't reclaim their £10 VAT on that invoice - the VAT receipt has to be in their name. Either ask the supplier to issue two invoices, or accept that one of you eats the VAT element.
We have more on this in VAT on restaurant receipts, explained for the non-accountant.
Three things you need to be doing if you have any meaningfully shared expenses:
We'd categorise expenses as we go, rather than at year-end. EvenRound now supports per-expense categories (Lodging, Transport, Food, Activities, Drinks, Misc). On the new-expense form they appear as chips. Tagging takes a second per expense and saves an hour at year-end when you'd otherwise be retro-categorising 80 line items.
I am still not your accountant. The above is the rough shape; the details will vary based on your trade, structure, and history. Pay an actual accountant. They're cheaper than HMRC's attention.
If you want to start tracking shared expenses cleanly, create a group for the relationship. Free, no signup, immediate.
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