E-commerce Accountants · South West London
E-commerce accountants in Mortlake
If your Mortlake business sells through marketplaces, your own store or both, the hard part is not the bookkeeping, it is the VAT: when the marketplace accounts for it, when you do, how imports are treated, what happens with EU customers. We handle this for sellers across South West London and the £149 health check finds the errors before HMRC does.
from £79/mo · fixed, per month
Next deadlines
- VAT return and payment for the quarter that ended last month
- VAT return and payment for the quarter that ended last month
- VAT return and payment for the quarter that ended last month
- Online Self Assessment filing deadline and balancing payment due
Who this is for
E-commerce Accountants for Mortlake
Online sellers in Mortlake: marketplace traders on one or several platforms, brands selling through their own store, dropshippers, subscription box businesses, sellers importing stock from overseas, UK sellers with EU or international customers, and businesses approaching or past the £90,000 VAT threshold who need the registration and returns handled correctly.
What is included
Everything inside the fixed fee
- Sales, fees, refunds and payouts reconciled per channel from marketplace and payment-processor reports
- VAT handled correctly for UK sales, marketplace-collected VAT, imports, EU and overseas customers
- Inventory accounting with cost of sales and stock valuation in the top package
- Cloud software integrated with your channels so transactions post automatically
- Annual accounts and Corporation Tax or Self Assessment, with the figures tying back to channel reports
- Marketplace VAT health check: a one-off review of your registrations and settings against the rules
How it works
E-commerce Accountants from Mortlake, step by step
Tell us your situation
A short message or call about what you do and what needs filing. We ask the questions that determine the right package and nothing more.
Fixed fee in writing
You receive one price for the work, confirmed by email before anything starts. It does not change if the job takes longer than we expected.
Send records, review the draft
Records come by WhatsApp or email. We prepare the draft, explain the figures in plain English and answer your questions.
We file, you get the receipts
Once you approve and the fee is settled, we submit electronically and forward the HMRC or Companies House acknowledgement the same day.
Why IGI
The IGI way of working, in Mortlake
The price for e-commerce accountants is published on this page and is what a client in Mortlake pays. We confirm it in writing first, and the invoice matches the quote.
Deadline-first: the dates that matter for e-commerce accountants are shown at the top of this page, diarised for every Mortlake client and chased before they arrive.
Online only, UK based. There is no office in Mortlake to pay for, which is why the fee is the same here as anywhere in England; the work is done by people in the UK who answer the same day.
Continuity matters in e-commerce accountants: the person who prepared last year's work for your Mortlake business prepares this year's, and remembers what was agreed.
The output for Mortlake clients is never just a form. It is the form, a one-page summary of what it says, and a note of the decisions it points to for e-commerce accountants.
Approval before filing is a rule, not a courtesy. For e-commerce accountants in Mortlake, every submission to HMRC or Companies House follows your written go-ahead.
Local facts
About Mortlake
Mortlake is in South West London, within Richmond upon Thames, in the SW14 postcode district, England. Income tax in England follows the UK rates: 20% basic to £50,270, 40% higher to £125,140 and 45% additional, with the personal allowance of £12,570 tapered away above £100,000. National Insurance, VAT and Corporation Tax are UK-wide, and Stamp Duty Land Tax applies to property purchases.
| Place | Distance | Direction |
|---|---|---|
| East Sheen | 0.5 mi | S |
| Mortlake and Barnes Common | 0.8 mi | E |
| North Sheen | 0.8 mi | W |
| Barnes | 0.9 mi | E |
| Kew | 0.9 mi | NW |
| Chiswick Riverside | 0.9 mi | N |
| Kew Green | 1 mi | NW |
| Chiswick Homefields | 1 mi | NE |
Worth knowing
Rules that come up in this work
Crypto records and reporting
HMRC treats cryptoassets as property. Swapping one token for another, spending crypto or gifting it are all disposals for Capital Gains Tax, and staking and lending rewards are income. Gains are computed under pooling rules with same-day and 30-day matching. From 2026 HMRC receives data from exchanges worldwide under the Cryptoasset Reporting Framework, so unreported activity is increasingly visible.
The 60-day property CGT return
The 60-day Capital Gains Tax return on residential property is the deadline landlords most often miss, because it falls outside the Self Assessment cycle and runs from completion, not exchange. Private residence relief for periods you lived in the property, plus the final nine months, reduces the gain. Penalties for a late return mirror Self Assessment, starting at £100.
Record keeping
Record keeping is a legal obligation with a penalty of up to £3,000 for failure, but its real value is in making every other filing cheaper and more defensible. Keep invoices, receipts, bank statements, mileage logs and any HMRC correspondence, digitally if you like, for five years after the relevant filing deadline for individuals and six years for companies and VAT.
Allowable expenses
An expense is allowable against trading profit if it is incurred wholly and exclusively for the business. Materials, business travel other than ordinary commuting, a proportion of home running costs, software, insurance, professional fees, bank charges and protective clothing qualify. Client entertainment, ordinary clothing, fines and the private share of mixed-use costs do not.
Employer National Insurance
Since April 2025 employer National Insurance has been 15% on earnings above a £5,000 secondary threshold, a substantial increase for small employers. The Employment Allowance rose to £10,500 at the same time to soften it for the smallest businesses. Directors deciding their own salary weigh this cost against the Corporation Tax deduction a salary provides.
Workplace pensions and auto-enrolment
Workplace pension compliance is part of payroll, not separate from it. Each pay period the payroll assesses who is eligible, calculates employer and employee contributions on qualifying earnings between the lower and upper thresholds, and sends the contribution file to the scheme. The minimum total is 8%, and many employers choose to contribute more as a recruitment advantage.
Dormant companies
A dormant company is one with no significant accounting transactions in the year, where the only permitted entries are the payment for shares on incorporation, Companies House fees and penalties. It still files a confirmation statement and simplified dormant accounts every year. A bank charge or an accountant's fee paid from the company ends dormancy and requires full accounts.
Questions
E-commerce Accountants questions from Mortlake
What is the marketplace VAT health check?
A one-off £149 review of your VAT registration, your marketplace tax settings, your treatment of imports and overseas sales, and a sample of recent returns against the rules. It produces a written report of errors found and what to do about them. Most sellers who have set things up themselves have at least one.
Can you reconcile my payment processor as well as the marketplace?
Yes. Card processors and payment gateways on your own store are integrated so that gross sales, fees and payouts post and reconcile automatically. The fee treatment, including VAT on processor fees, is configured at setup, which is where most self-built integrations go wrong.
I sell to EU customers. What VAT applies?
Since 2021 sales of goods to EU consumers are exports from the UK, zero-rated here, with EU VAT due in the customer's country. The EU's Import One Stop Shop lets you account for consignments under €150 through one registration. Above that, local registration or the customer paying on delivery. We advise on the right route for your volumes.
When do I need the inventory package?
When you hold meaningful stock. Without inventory accounting, the cost of goods purchased is expensed when bought, which distorts profit between periods and misstates the balance sheet. The £179 package tracks stock, calculates cost of sales and values closing stock, which lenders, investors and HMRC all expect from a stock-holding business.
Who accounts for VAT on marketplace sales?
For goods sold to UK consumers through an online marketplace, the marketplace accounts for the VAT if the seller is overseas or the goods are imported in consignments up to £135. A UK seller selling UK-held goods to UK customers accounts for their own VAT. Mixed situations are common and we separate them on every return.
How are imports treated?
Import VAT is charged when goods enter the UK and can be reclaimed as input VAT if you are registered, using postponed VAT accounting so nothing is paid at the border. Customs duty depends on the goods and origin and is a cost, not reclaimable. We make sure the C79 or postponed accounting statements are matched to the return.
Do you have an office in Mortlake?
No. IGI Accounting is an online-only firm. We serve Mortlake and every other UK postcode remotely, with records sent by WhatsApp or email and everything filed electronically. The absence of local premises is why the fee for e-commerce accountants is the same in Mortlake as anywhere else in the country, and why there is nothing to visit and nothing to print.
Is e-commerce accountants in Mortlake really the same price as elsewhere?
Yes. The fee published on this page is what a client in Mortlake pays and what a client in any other part of England pays. It is confirmed in writing before work starts and the invoice matches the quote. Where a higher package applies because your situation is more complex, we say so at the quote stage, never afterwards.
Let us take the deadlines off your plate in Mortlake
Tell us what you need. You get one fixed fee in writing, and nothing is filed until you approve it.