London’s e-commerce sector gives ambitious businesses access to large domestic and international markets. However, selling online creates financial challenges that do not usually exist in a straightforward service business or high-street shop.
Sales may pass through Shopify, Amazon, Etsy, eBay or TikTok Shop before being settled through Stripe, PayPal, Klarna or another payment provider. Each platform may deduct fees, advertising costs, refunds, reserves and chargebacks before transferring the remaining balance to your bank.
Recording only the amount deposited into the bank account can therefore understate both sales and expenses. It may also produce incorrect VAT returns, unreliable profit figures and incomplete marketplace records.
Specialist e-commerce bookkeeping brings these separate systems together. It ensures gross sales, VAT, fees, refunds, stock and payment settlements are recorded properly so that you can understand how the business is actually performing.
Carter Bookkeeping Services supports e-commerce businesses across London, St Albans, Harpenden and Hertfordshire with bookkeeping, VAT return support and holistic bookkeeping reviews.
What Is E-Commerce Bookkeeping?
E-commerce bookkeeping is the process of recording, reconciling and reporting the financial activity generated by an online retail business.
It includes ordinary bookkeeping tasks such as recording income and expenses, but it must also account for the way online marketplaces and payment processors collect and distribute money.
A complete e-commerce bookkeeping system may need to track:
- Gross sales from each store or marketplace.
- VAT charged on sales.
- Discounts, promotional codes and gift cards.
- Refunds, returns and exchanges.
- Payment-processing and marketplace fees.
- Advertising costs deducted by platforms.
- Chargebacks and payment disputes.
- Stock purchases and inventory movements.
- Packaging, storage and fulfilment costs.
- Shipping income and courier expenditure.
- Foreign-currency sales and conversion charges.
- Import VAT, customs duty and overseas supplier costs.
Why Online Businesses Need Specialist Bookkeeping
A bank deposit from an e-commerce platform rarely represents a single sale. It is normally the net result of many transactions processed during a settlement period.
For example, an Amazon settlement may include:
- Customer sales.
- VAT collected.
- Referral and fulfilment fees.
- Advertising charges.
- Customer refunds.
- Storage fees.
- Account reserves.
- Previous settlement adjustments.
If the final bank deposit is recorded as sales, the accounts will omit the deductions and will not show the true gross revenue generated during the period.
Specialist bookkeeping separates these elements and reconciles the marketplace balance to the amount actually paid into the bank.
The Main Bookkeeping Challenges for E-Commerce Brands
Multi-Channel Sales
An online retailer may sell through its own website alongside Amazon, Etsy, eBay and social-commerce platforms. Each channel provides different reports, settlement periods and fee structures.
Sales must be recorded without duplicating transactions that appear in both the website platform and the payment processor.
The bookkeeping system should also show performance by channel where useful. This allows the business to compare revenue, fees, refunds and profitability across marketplaces.
Payment-Processor Reconciliation
Stripe, PayPal, Klarna and other payment processors normally transfer net settlements rather than the full value of customer payments.
The processor account should be treated as a separate financial account and reconciled in the same way as a bank account.
A proper reconciliation checks that:
- Customer payments were recorded in full.
- Processing fees were recorded separately.
- Refunds and chargebacks were included.
- Amounts still held by the processor remain on the balance sheet.
- The final settlement agrees with the bank deposit.
Returns, Refunds and Chargebacks
Returns are a normal part of e-commerce, but they can distort revenue and stock records if they are not processed consistently.
The bookkeeping should distinguish between:
- A full customer refund.
- A partial refund or goodwill adjustment.
- A product returned to saleable inventory.
- A damaged product written off.
- A payment chargeback initiated by the customer’s bank.
- A marketplace reimbursement or seller-protection payment.
Refunds should also reverse the appropriate VAT where the original sale included VAT and the normal conditions are met.
Inventory and Cost of Goods Sold
Purchasing stock is not always the same as recognising an immediate business expense. Unsold stock remains an asset of the business until it is sold, damaged, lost or otherwise written down.
Reliable inventory records help calculate the cost of goods sold and the gross profit earned from sales.
Inventory records may need to account for:
- Opening stock.
- Purchases during the period.
- Freight and other relevant landed costs.
- Units sold.
- Customer returns.
- Damaged or obsolete stock.
- Stock held by fulfilment centres.
- Closing inventory.
Without reliable stock information, gross profit reports may be misleading and purchasing decisions may be based on incorrect figures.
Foreign-Currency Transactions
International sales and purchases may be completed in euros, US dollars or other currencies before being converted into pounds sterling.
The amount received can differ from the sterling value of the original transaction because of exchange-rate movements and conversion fees.
The bookkeeping system should record:
- The transaction in its original currency.
- The appropriate sterling value.
- Currency-conversion charges.
- Exchange gains or losses where applicable.
- Amounts retained in foreign-currency accounts.
VAT for E-Commerce Businesses
VAT is one of the most complicated areas of e-commerce bookkeeping because the correct treatment can depend on:
- Where the business is established.
- Where the goods are located at the time of sale.
- Where the customer is located.
- Whether the customer is a business or consumer.
- Whether goods are sold directly or through an online marketplace.
- The value of an imported consignment.
- Whether the transaction involves Great Britain, Northern Ireland or another country.
The UK VAT Registration Threshold
A UK business must normally register for VAT when its VAT-taxable turnover for the previous rolling 12 months exceeds £90,000.
Registration may also be required where the business expects its taxable turnover to exceed £90,000 during the next 30 days alone.
The test is based on turnover rather than profit. Marketplace fees, advertising costs and other expenses do not reduce turnover for the purpose of assessing whether the registration threshold has been exceeded.
Growing online brands should monitor taxable turnover every month rather than checking it only at year-end.
Making Tax Digital for VAT
All VAT-registered businesses must generally keep digital VAT records and submit returns through compatible software unless HMRC has granted an exemption.
This applies to businesses that registered voluntarily as well as those required to register because their turnover exceeded the threshold.
Sales data imported from Shopify, Amazon or another platform must still be checked. Making Tax Digital requires digital records, but it does not guarantee that automated integrations have transferred the information correctly.
Marketplace VAT
In some transactions, an online marketplace is treated as the supplier for VAT purposes and is responsible for accounting for the VAT.
This is particularly relevant to certain sales by overseas sellers and some goods imported in consignments worth no more than £135.
The rules depend on where the goods are located, where the seller is established and whether the customer is a business or consumer.
A marketplace collecting VAT does not automatically remove every VAT obligation from the seller. The business may still need to record the transaction, retain marketplace reports and consider its wider registration and reporting position.
Sales Outside the UK
Selling to overseas customers can create additional VAT, customs and registration obligations.
The correct treatment depends on factors including:
- Whether the business sells goods or services.
- Whether goods are dispatched from Great Britain, Northern Ireland or an overseas warehouse.
- Whether the customer is a consumer or VAT-registered business.
- The destination country’s registration rules.
- Whether an online marketplace accounts for the tax.
- Whether the One Stop Shop or Import One Stop Shop may be relevant.
The One Stop Shop arrangements are particularly relevant to qualifying distance sales involving Northern Ireland and EU consumers. A business selling from Great Britain may instead need to consider registration or import arrangements in the destination country.
Cross-border VAT should be reviewed before entering a new market rather than after sales have begun.
Import VAT and Customs Duty
Online retailers importing stock into the UK may incur customs duty, import VAT, freight charges and customs-agent fees.
These amounts should not all be recorded in the same expense category.
The bookkeeping may need to separate:
- The supplier’s stock invoice.
- Shipping and insurance.
- Customs duty.
- Import VAT.
- Customs clearance fees.
- Postponed import VAT amounts.
VAT-registered businesses using postponed VAT accounting should obtain and retain the relevant monthly statements and reconcile them to the import transactions included in the VAT return.
Customs duty is generally a cost of importing the goods and is not reclaimed through the VAT return.
The VAT Reverse Charge on Overseas Services
E-commerce businesses frequently purchase services from suppliers based outside the UK. Examples may include overseas software subscriptions, platform services, consultancy and digital advertising.
Where the normal business-to-business place-of-supply rules apply, the UK business may need to account for VAT using the reverse charge.
Under the reverse charge, the UK customer records output VAT as though it had supplied the service to itself. It may normally reclaim the corresponding input VAT, subject to the usual recovery rules.
The reverse charge can also affect whether a business has exceeded the VAT registration threshold, even where the overseas supplier did not charge UK VAT.
The treatment should be checked carefully because exceptions apply to certain services.
VAT Disbursements and Recharged Expenses
A VAT disbursement is not simply an expense that is passed on to a customer.
A genuine disbursement occurs where a business pays a third party on behalf of its customer and the customer is responsible for receiving and benefiting from the underlying supply.
Courier charges, packaging and other costs incurred while fulfilling an online order will normally form part of the retailer’s own supply rather than being treated as VAT disbursements.
Where delivery is charged separately to the customer, it will often follow the VAT treatment of the goods being supplied. The precise treatment depends on the contractual arrangement and nature of the sale.
E-commerce businesses should therefore avoid automatically coding delivery charges or recharged costs as disbursements.
How Carter Bookkeeping Services Supports E-Commerce Brands
Accounting Software and Integration Setup
We help establish a bookkeeping system that connects the accounting platform with the business’s sales channels, banks and payment processors.
This may involve platforms such as:
- Shopify.
- Amazon.
- Etsy.
- eBay.
- TikTok Shop.
- Stripe.
- PayPal.
- Klarna.
- Xero or QuickBooks.
The exact setup depends on transaction volume, reporting requirements and the quality of data provided by each platform.
Integrations reduce manual entry, but they must be configured and reviewed properly. A poorly configured integration can duplicate sales, omit refunds or apply incorrect VAT codes across thousands of transactions.
Sales and Settlement Reconciliation
We reconcile marketplace and payment-processor activity so that the gross sales, fees, refunds, reserves and bank deposits agree.
This provides a clear audit trail from the individual platform reports to the accounting records and bank account.
Inventory and Gross-Profit Reporting
We help organise stock-purchase and inventory information so that the business can produce more reliable gross-profit figures.
Where detailed inventory software is used, its balances should be reconciled with the accounting system and reviewed at year-end.
Returns and Refund Reconciliation
Customer returns, refunds and chargebacks are recorded separately from ordinary sales so they can be monitored and reported accurately.
This can help identify unusually high return rates, product-quality issues and channels producing excessive chargebacks.
VAT Returns
We prepare VAT returns from reconciled sales, purchase and payment records.
This can include reviewing:
- UK sales VAT.
- Marketplace VAT reports.
- Import VAT statements.
- Overseas-service reverse charges.
- Refunds and credit notes.
- Input VAT claims.
- Transactions requiring further specialist advice.
Bookkeeping Health Checks
A holistic bookkeeping review can identify weaknesses in an existing e-commerce accounting setup.
The review may identify:
- Sales recorded at the net settlement value.
- Duplicate transactions created by integrations.
- Unreconciled Stripe, PayPal or marketplace balances.
- Incorrect VAT codes.
- Missing import VAT statements.
- Inventory figures that do not agree with operational records.
- Old customer or supplier balances.
- Foreign-currency balances that have not been revalued.
Financial Reports for Growing E-Commerce Businesses
Once the bookkeeping is accurate, financial reporting can help management understand where growth is producing value and where it is creating additional cost.
Useful e-commerce measures can include:
| Measure | What It Shows |
|---|---|
| Gross sales | Total customer sales before refunds, marketplace fees and processing deductions. |
| Net sales | Sales remaining after returns, refunds and discounts. |
| Gross profit | Net sales remaining after the cost of goods sold. |
| Gross margin | Gross profit expressed as a percentage of net sales. |
| Marketplace fees | The cost of selling through each platform. |
| Payment-processing costs | The fees charged for collecting customer payments. |
| Refund rate | The proportion of sales reversed through returns and refunds. |
| Inventory turnover | How quickly stock is sold and replaced. |
| Fulfilment cost per order | The storage, picking, packing and delivery cost associated with orders. |
| VAT liability | The amount expected to be payable to or recoverable from HMRC. |
These figures should be reviewed by channel, product category or market where the available data allows it.
A platform generating the highest sales may not generate the highest profit after advertising, fulfilment, returns and commission are included.
How Often Should E-Commerce Bookkeeping Be Updated?
The appropriate frequency depends on transaction volume and the complexity of the sales channels.
| Frequency | Recommended Activity |
|---|---|
| Daily or weekly | Import sales data, capture supplier invoices and investigate integration failures. |
| Weekly | Review payment settlements, cash balances, refunds and overdue supplier costs. |
| Monthly | Reconcile banks, payment processors, marketplaces, stock and foreign-currency balances. |
| Quarterly | Review VAT, channel profitability, inventory, margins and cash flow. |
| Annually | Complete year-end stock valuation, financial statements and tax reporting. |
A high-volume online retailer should not leave its bookkeeping until the end of the VAT quarter. Errors across thousands of transactions can take considerable time to identify and correct.
How Long Should E-Commerce Records Be Kept?
The required retention period depends on the business structure and the type of record.
- VAT records: Generally at least six years.
- Limited-company accounting records: Generally six years from the end of the relevant company financial year.
- Self-employed records: Generally at least five years after the 31 January submission deadline for the relevant tax year.
- Specialist VAT-scheme records: Longer retention periods may apply.
Records may need to be retained for longer where a return was submitted late, a transaction spans several periods or HMRC has opened a compliance check.
Useful records include:
- Marketplace transaction and settlement reports.
- Payment-processor reports.
- Sales and purchase invoices.
- VAT returns and supporting calculations.
- Import VAT and customs documents.
- Bank statements.
- Inventory records.
- Refund and chargeback reports.
- Foreign-currency reports.
- Evidence supporting overseas VAT treatment.
Frequently Asked Questions
What Is Different About E-Commerce Bookkeeping?
E-commerce bookkeeping must reconcile gross sales, fees, refunds, chargebacks and settlements across multiple platforms. Recording only bank deposits will rarely produce complete accounts.
Can Shopify or Amazon Be Connected to Accounting Software?
Yes. Direct integrations or specialist connector applications can transfer summarised sales data into platforms such as Xero or QuickBooks.
The setup must be reviewed carefully to prevent duplicate sales, incorrect VAT treatment and excessive transaction volumes.
Should Marketplace Deposits Be Recorded as Sales?
No. A marketplace deposit is normally a net settlement after fees, refunds and other deductions. The gross sales and deductions should be recorded separately.
When Must an E-Commerce Business Register for VAT?
A UK business must normally register when its VAT-taxable turnover for the previous rolling 12 months exceeds £90,000. Different rules can apply to businesses not established in the UK and to particular cross-border transactions.
Should an Online Business Register for VAT Voluntarily?
Voluntary registration may be beneficial where the business incurs substantial recoverable VAT or mainly sells to VAT-registered customers.
However, it creates pricing, administration, digital record-keeping and VAT return obligations. A consumer-facing retailer may also need to decide whether to increase prices or absorb VAT within its existing selling price.
What Is VAT on Disbursements?
A genuine VAT disbursement is an amount paid to a third party on behalf of a customer where the customer receives and is responsible for the underlying supply.
Ordinary delivery, packaging and fulfilment expenses incurred by an e-commerce retailer will not normally qualify simply because they are recharged to the customer.
What Is a Reverse-Charge VAT Transaction?
The reverse charge commonly applies when a UK business purchases qualifying services from a supplier outside the UK. The UK business accounts for output VAT and may normally reclaim corresponding input VAT, subject to the usual rules.
This can affect overseas software, advertising and professional-service purchases.
How Long Should an Online Business Keep Its Records?
VAT and limited-company records generally need to be kept for six years. Self-employed record-retention rules are based on the Self Assessment submission deadline and may produce a different period.
Can an E-Commerce Bookkeeper Help With International VAT?
A bookkeeper can maintain the underlying records, identify transactions requiring review and coordinate information for VAT returns.
Where a business needs overseas registration, detailed customs advice or an interpretation of complex cross-border rules, specialist tax advice may also be required.
E-Commerce Bookkeeping Services for London Businesses
Rapid sales growth can hide weak margins, unreconciled marketplace balances and increasing VAT exposure. Reliable bookkeeping gives you a clearer view of the business before these issues become expensive to correct.
Carter Bookkeeping Services supports online brands across London, St Albans, Harpenden and Hertfordshire with marketplace reconciliation, payment-processor bookkeeping, VAT returns, financial reporting and bookkeeping health checks.
Contact Carter Bookkeeping Services to arrange an initial discussion about your e-commerce bookkeeping requirements.
- Phone: 07903 364040
- Email: wendy@carterbookkeepingservices.co.uk