Accountant for Amazon & eCommerce Sellers in the USA and UK

Marketplace payouts are not your sales. Amazon, Shopify, eBay, Walmart, Etsy and TikTok Shop deduct fees, refunds, ad spend and reserves before the money lands in your bank. If your books only record the deposit, your profit and your tax bill are both wrong.

We reconcile every settlement report back to gross sales, fees and costs, so you see your real margin per channel and file correct returns with the IRS, your state or HMRC.

What we handle for online sellers

• Settlement and payout reconciliation for Amazon, Shopify, eBay, Walmart, Etsy and TikTok Shop
• Inventory and cost of goods sold tracking, including FBA and 3PL stock
• US sales tax: marketplace facilitator rules, nexus checks and state filings
• UK VAT returns under Making Tax Digital, including marketplace VAT and imports
• Monthly profit and loss by sales channel
• Business tax returns: Schedule C, 1065, 1120-S and 1120 in the US; Self Assessment and CT600 in the UK
• Non-resident sellers with a US LLC or UK limited company

Why sellers switch to Tax Expert

• We know marketplaces. Our team works with eCommerce businesses every day, not just general bookkeeping.
• One dedicated accountant. The same person every month who knows your channels and suppliers.
• Fixed monthly price. Agreed upfront. Use our fee calculator for an estimate.
• US and UK in one place. Selling on Amazon.com and Amazon.co.uk? We cover both sides.

Software we work with

QuickBooks Online, Xero, A2X, Link My Books, Shopify, Amazon Seller Central, Gusto and more. If you already use a tool, we work inside it.

Frequently asked questions

Do I have to collect sales tax on Amazon sales in the US?

In most states Amazon collects and remits sales tax for you as the marketplace facilitator. You may still need to register and file in states where you have nexus, and sales on your own Shopify store are usually your responsibility. We check your nexus and handle the filings.

Do UK Amazon sellers need to register for VAT?

You must register once your VAT-taxable turnover goes over £90,000 in any rolling 12-month period. Non-UK sellers storing stock in the UK must register from the first sale. We register you and file your VAT returns under Making Tax Digital.

Can you fix messy or missing books?

Yes. We offer catch-up bookkeeping to rebuild past months from your settlement reports and bank statements before moving you onto a monthly plan.

How much does an eCommerce accountant cost?

It depends on your order volume, number of channels and the filings you need. Try our accounting fee calculator for an instant estimate, then book a free call for a fixed quote.