Proto Simulates IP location: UK sees GBP, EU sees EUR, everyone else sees USD. Prices come from the product catalogue in each currency.

Amazon · Shopify · eBay · Etsy · TikTok Shop

Run the store. We run books, tax and filings behind it.

Your books and tax department, without the hiring. Bookkeeping, VAT and US sales tax kept current, filings prepared from live figures, every deadline owned.

Not a general practiceNot a bookkeeping appyour department, plus your own agent

Built for sellers on
Online sellers onlyISO 9001:2015Professional indemnity insuredHMRC AML supervised

Why this is different

A department, not a deadline you have to remember.

A practice sells you hours. A department owns an outcome. When you join, the work that normally sits across four hires and a set of spreadsheets moves into one place, and stays there.

01
BookkeepingEvery payout, fee, refund and shipping cost posted to your books app, month after month.
Covered
02
VATRegistration, quarterly returns and the scheme decision, reviewed each quarter rather than guessed once.
Covered
03
US sales taxNexus watched state by state, registrations raised when you cross a threshold, returns filed on time.
Covered
04
Filing calendarEvery statutory date owned by us, not by your memory. You see the same calendar we work from.
Covered
05
Year endAccounts and confirmation statement prepared from the same live figures, not rebuilt from a box of PDFs in January.
Covered
06
Analytics and AI, built inDashboards and an assistant inside TaxLunar, answering from your own figures. Connect your own agent over MCP if you want one.
Included

The point is not that software replaces people. It is that you stop being the integration layer between them. No evening spent matching payouts to a bank feed, no January scramble, no 11pm question about whether the VAT return actually went in. You keep the store. We keep the department.

One system for the whole company.

Choose a package and the company opens in TaxLunar. From then on, this is where you see it.

Know what is due, and what we need.

My Actions lists every document and answer we need from you, each with a due date. Nothing waits on a phone call.

Every store, straight into your books.

Connect Amazon, Shopify, eBay, Etsy, TikTok Shop or your own site. Sales, fees and refunds land in the books app you already use: Xero, QuickBooks Online or FreeAgent.

See US sales tax before it is due.

Every state on one heat scale. As sales in a state near its threshold, it moves onto your watch list, so you can see a registration coming.

Every company on one login.

A US LLC, a UK Ltd, or both. Switch company at the top, or add another without opening a new account.

TaxLunar on your phone and your computer.

Install it from the browser on iPhone, iPad, Android, Windows and Mac. A Windows app comes next, then Mac.

Your own agent

Your business, run from your own agent.

TaxLunar is not a closed app. Your assistant reads the same records our team works from: sales, books, tax position, filings and what we are waiting on from you. Ask it in plain English instead of opening four screens.

  1. 01
    AskAny question, answered from your own live figures instead of a spreadsheet you rebuilt last month.
  2. 02
    BuildThe dashboard you actually want, assembled by your agent from the same records. No export, no waiting on a report.
  3. 03
    ActRaise a ticket, upload a document, book a meeting, prepare a payment. Anything that changes a record is prepared first and confirmed separately.

Your agent works under permissions you grant, in the scopes you choose, with a full audit trail. It does not file returns. Our accountants do that, on the same figures the agent can see.

Set up

Connect your agent in about a minute.

Pick what you already use: an assistant, your editor, or an automation platform like n8n. Every setup is one server URL and one approval, with no plugin per tool and nothing to keep updated.

1 Add the server

The same address for every assistant. Nothing to install.

2 Open Connectors

In Claude, go to Settings, then Connectors, then Add custom connector.

3 Approve, then use it

Sign in to TaxLunar, approve the scopes you want, then ask in plain English or attach the tools to a workflow. Read-only until you approve more.

Your agent acts as you and never wider: every call is checked against your role and company. Read-only until you approve more, revocable from Connected apps at any time.

Built for online sellers

If you sell there, we connect to it.

Orders, fees, refunds and payouts come straight out of your stores and into the books app you keep. No CSV exports, no month-end copy-paste.

AmazonMarketplace
ShopifyYour own store
eBayMarketplace
EtsyMarketplace
TikTok ShopMarketplace
WooCommerceYour own store
WixYour own store
Your own siteCustom checkout
Where the money lands Your books stay yours.
Xero QuickBooks Online FreeAgent

Your own subscription, your own file. We are invited in as a user.

Your own AI assistant Every settlement above lands in your books, and the same figures are available to your agent over MCP, so you can ask about a payout in plain English.

The model, not just the niche

Not a practice. An accounting function.

A practice bills monthly, asks for a box of receipts and sends accounts at year end. We run the accounting continuously, end to end: your stores, your books and your filings connected, and the position visible on the day you look. That only works for one kind of client, so we take on one kind of client.

Right for you

If your money moves through a store, we run it

  • Sell on a marketplace, your own store, or both
  • Hold stock, drop-ship, or sell digital goods
  • Trade in more than one country, or plan to
  • Have a UK company, a US LLC, or both
  • Sell as a sole trader online and want the returns handled
  • Are moving from an accountant who does not understand your stores
Not for you

If there is no online sale, there is nothing for us to run

  • Local trades, cafés, salons or consultancies
  • Landlords and property portfolios
  • Payroll-only or CIS-only work
  • Anyone with no online sales at all

We would rather lose the fee than sell a generalist service under a specialist name. If your stores are the business, you are in the right place.

Start today, without a call.

  1. Choose the package and payPick the company, see the price, pay by card.
  2. Connect in Setup ModeBooks, stores and ID checks. Our team then sets the account live.
  3. We keep it currentBooks, filings and tax, always visible in TaxLunar.

Monthly packages. Clear prices.

Prices exclude VAT. Checkout adds it where it applies.

“They have comprehensive packages for Ecommerce sellers offering them everything they need from the address to the VAT registrations to the regular accountancy.”
Nathalie BrandEcommerce seller, United Kingdom

Questions

Do I need a call before I buy?

No. Choose the package, pay, and TaxLunar opens in Setup Mode. If something about your company needs a price we have not published, ask TaxLunar AI. It answers from our published prices and, if you still need us, passes your enquiry to the TaxLunar team.

Is accounting software included?

No. Keep Xero, QuickBooks Online or FreeAgent. That subscription stays yours, and TaxLunar connects to it.

What happens when my turnover grows?

We move you to the matching band from the date you passed it, and show you the figure and period we used.

Can I add another company later?

Yes. Add a US LLC or a UK Ltd on the same login. Each company has its own package and appears in the company switcher.

What do I still have to do each month?

Answer the occasional question, upload a document if we ask for one, and approve anything that changes a record. Records can be sent whenever they are ready: we reconcile them and update your books within 48 hours of the upload, depending on the volume. Everything else — pulling the store data, watching thresholds, preparing and filing — is ours. If we need you, it appears as an action with a due date, not an email you have to remember.

Can my own AI assistant use TaxLunar?

Yes. TaxLunar supports MCP, the open standard that Claude, ChatGPT connectors, Cursor, n8n workflows and other MCP-capable tools already speak. Your assistant can read your records, answer questions, build a dashboard and prepare changes, under permissions you grant and with an audit trail. It cannot file a return; our accountants do that on the same figures.

Open TaxLunar today.

Pick the company, see the price, and pay.

/ Services

Services

Three desks. One company.

Bookkeeping, VAT, US sales tax, year-end accounts and company formation. Each one belongs to a desk with a name, and each desk works from the same records. Prices live on the pricing page, so this page stays about the work.

The work, by desk

What each desk takes off you.

A desk owns an outcome rather than a task list. Open one to see the services it runs, and what the company gets at the end of it.

Desk 01

Books

Every payout, fee, refund and shipping cost posted into the books app you already own, reconciled against the stores, and closed on a date we agree rather than a date you chase.

Desk 02

Tax

Where the company is registered, what each registration obliges, and the return prepared from live figures. Thresholds are watched before they are crossed, so a registration is never a surprise.

Desk 03

Company

The two ends that are not monthly work: standing the company up, and the returns for a seller who has not incorporated. Both open in TaxLunar on the day they start.

Starting a service

Three steps, then it is ours.

The same start for a one-off registration and for a full accounting plan.

  1. Pick the serviceThe scope on each row is what we take on. Anything outside it is quoted before we begin, not billed after.
  2. Connect the stores and your booksAmazon, Shopify, eBay, Etsy, TikTok Shop or your own site, into Xero, QuickBooks Online or FreeAgent. The company opens in TaxLunar as it connects.
  3. Then you see it runReconciliations, registrations and returns appear with a due date, who is preparing them and the copy of what was filed.

Not sure which desk the work belongs to?

Pick one service, or the package.

Start with what is live today. Add the rest when the company needs it.

/ Pricing

Pricing

Choose the package for your company and pay by card. Every package is for a company that sells online. Prices exclude VAT, and checkout adds it where it applies.

Where is your company registered?

Dormant LLC with no revenue? USA Basic, , covers Form 5472 with a pro forma Form 1120 and the state annual report.

Pricing questions

Is there an app?

Yes, with every package. Install TaxLunar from your browser on iPhone, iPad, Android, Windows and Mac, and sign in with your usual login. A Windows app comes next, then Mac.

Is accounting software included?

No. Keep Xero, QuickBooks Online or FreeAgent. That subscription is yours, and TaxLunar connects to it. Your package pays for TaxLunar and the work our accountants do.

Which currency do I pay in?

Prices on the site follow where you are: pounds in the UK, euros in the EU, US dollars everywhere else. You pay in your company's currency: pounds for a UK company, euros for an EU company, US dollars for the rest. Checkout shows it before you pay.

Do I pay VAT?

It depends on your company. UK companies pay VAT at 20%. Companies based outside the UK usually pay no UK VAT, unless they have a UK office or branch, or no business tax number. Checkout works it out and shows any VAT before you pay.

What happens if my turnover goes over my plan's band?

We move you to the matching band from the date you passed it, and tell you the turnover figure and period we used.

How quickly do you reply?

Where a reply is needed, usually within 48 hours. Calculations and workings take longer, depending on the task.

Is a US LLC the same as "UK company selling in the USA"?

No. A US LLC is the US company itself, with its own three packages. "UK company selling in the USA" is for a UK Ltd that also trades in the US.

Do you manage my stock?

No. We do the bookkeeping for stock and cost of goods from your records and marketplace settlements. We don't run inventory or warehouses.

/ Blog

Blog

Tax, VAT and marketplace changes for sellers in the US, UK and EU. Marketplace rules, cross-border registrations and product updates, and nothing outside online selling.

Latest guides

/ Stores

Stores, inside TaxLunar

Amazon, Shopify, eBay, Etsy, TikTok Shop or your own site. The marketplace is not the product. The company in the system is.

Settlements land in TaxLunar.

  • Any store you sell onConnect it. TaxLunar reads the settlements. We are not tied to one marketplace.
  • Stock and cost of goodsBookkeeping from your records. TaxLunar does not run the warehouse.
  • Your books appXero, QuickBooks Online or FreeAgent. The subscription stays yours.
/ About

TaxLunar Ltd

An accounting and tax firm for online sellers in the UK, the US and the EU. The firm keeps the books and files the returns; TaxLunar is the platform where you see the work.

What TaxLunar is

A firm that runs the finance function for online sellers.

TaxLunar is an accounting and tax firm, not a general practice and not a bookkeeping tool. We take on online sellers only: companies whose revenue arrives through Amazon, Shopify, eBay, Etsy, TikTok Shop, WooCommerce, Wix or their own store. We keep the books from marketplace and store settlements, prepare and file VAT and US sales tax returns, prepare year-end accounts and tax returns, and own the deadline calendar.

Every figure we file is visible in the TaxLunar platform, on the web and on your phone. Nothing is summarised once a year and explained later.

The scope

What we do, in full.

This is the work, not a feature list. Each line is something TaxLunar does for a client rather than something the client has to remember.

Bookkeeping from settlements

Sales, marketplace fees, refunds, advertising spend, payouts and stock costs reconciled from Amazon, Shopify, eBay, Etsy, TikTok Shop, WooCommerce and Wix, so the books show what the store actually earned.

UK VAT and Making Tax Digital

Registration, quarterly returns to HMRC and digital records kept for MTD. OSS returns cover EU sales made by a UK company, so one return replaces a registration in every country.

EU VAT by country

Registration and returns in each EU country you sell into, as its own yearly subscription. The One-Stop Shop is used where it applies, and deregistration is handled when a registration is no longer needed.

US sales tax and nexus

State thresholds are watched from your own sales figures, a registration is filed when a threshold is crossed, and returns are filed state by state afterwards. Exposure is visible before it becomes a bill.

Year-end accounts and returns

Statutory accounts and the CT600 for a UK limited company. For a foreign-owned US LLC, Form 5472 with a pro forma 1120: a federal filing that applies with no profit and no US tax due.

Payroll and company formation

UK payroll for a limited company, with payslips, RTI submissions and year-end steps. UK company formation filed with Companies House, and US LLC setup alongside it.

The platform

Sixteen screens, and what each one holds.

The firm works in these screens, and so do you. Every one opens on the same company records, so a figure in Analytics is the same figure in Nexus. Nothing here is a separate purchase: the screens are part of the account.

The firm does the work. The platform shows it.

Most software for sellers moves data or calculates a figure: A2X and Link My Books post marketplace settlements into accounting software, Avalara, TaxJar and Taxually calculate sales tax and, in some plans, file the return. None of them keeps the books month to month, prepares the year-end accounts, or answers for the whole filing calendar.

TaxLunar is the other way round. Accountants do the bookkeeping, prepare the returns and file them; the platform is how you watch that happen. Each filing has a status, a date and a person. Each question has a ticket. The same records feed the AI assistant, so an answer about your VAT position comes from your own books rather than a general article.

If your books already sit in Xero, QuickBooks Online or FreeAgent, they stay there. TaxLunar works inside your ledger rather than asking you to leave it.

How the work runs

  • Deadlines you can seeEvery filing has a due date and an owner. My Actions lists what needs you; Projects lists what needs us; Filings shows what is due next.
  • Send records any timeUpload whenever they are ready. We reconcile them and update your books within 48 hours of the upload, depending on the volume.
  • Replies within 48 hoursWhere a reply is needed. Calculations take longer, depending on the task.
  • You are not chasingMissed paperwork, an open VAT question and a filing due in nine days are all visible before they become a penalty.
  • We grow with youAnother company, another store, another country or payroll as you hire. The work scales with the sales.

The method

How a month closes.

Bookkeeping is where most e-commerce accounts go wrong, because a marketplace payout is not a sales figure. This is the order we work in, every month, for every store.

  1. Settlements arriveEach store's payout report is pulled from the connection, not typed from a spreadsheet. Amazon, Shopify, eBay, Etsy, TikTok Shop and your own site each send their own.
  2. Fees come out of salesCommission, fulfilment, storage, advertising, refunds and chargebacks are separated from gross sales, so revenue is what the store earned rather than what the buyer paid.
  3. Payouts meet the bankWhat the marketplace paid is matched to what arrived in the account. A payout received in one month for sales in another is recorded in the right period.
  4. Stock and cost of goods are postedPurchases and stock movements go in, so margin and closing stock are real figures rather than a year-end estimate.
  1. Anything unclear becomes one questionA supplier invoice with no VAT, a mixed personal purchase, a refund with no order: each becomes a single item in My Actions with a date, not an email thread.
  2. The month is closed in your ledgerClosed in your own Xero, QuickBooks Online or FreeAgent. You keep the file, the history and the access if you ever leave.
  3. Returns are prepared from the closed booksVAT, a US state return or the year end is prepared from the same figures you can already see, not from a second set kept elsewhere.
  4. Filed, with a status and a dateThe return is filed and appears in Filings with the period it covers, the amount and the date it went in.

What lateness costs

The date is the thing that costs money.

Most penalties for a seller are fixed, published and automatic. They are not negotiated, and no accountant can make one disappear after the date has passed. This is the shape of them, so the calendar stops being abstract.

FilingWhen it is lateWhat is charged
UK VAT returnReturn not submittedA penalty point per late return. At the threshold, two for a quarterly filer, a fixed penalty applies to each late return while the points stay on record.
UK VAT paymentTax paid lateA percentage of the tax unpaid at day 15 and again at day 30, then a daily percentage after that, capped at a total. Interest runs on top.
UK corporation taxCT600 filed lateFixed amounts that step up at one day, three months, six months and twelve months, with a further charge based on unpaid tax at six and twelve months.
Companies HouseAccounts filed lateA banded fixed penalty that rises with how late the filing is, and is higher again where accounts were also late the year before. Repeated failure can be prosecuted.
US Form 5472Not filed for a foreign-owned LLC25,000 US dollars per form, per year. It applies with no profit, no US tax due and no activity.
US sales taxReturn or registration missedSet by each state: the tax due, interest, and a state penalty that grows with how long it is outstanding. Registration penalties can arise before any tax is due.
EU VATReturn or registration missedSet by each country, with interest and penalties that differ substantially between member states. The One-Stop Shop simplifies the return, not the deadline.

General information, not tax advice. Regimes change, so the rules and amounts that apply to your company are confirmed before any work starts. Penalties are charged by the authority, not by TaxLunar.

Why we started

TaxLunar was founded in response to a problem we kept seeing: online sellers let down by accountants who did not understand marketplace sales or cross-border tax. That gap costs time and money, as tax authorities charge penalties and surcharges for late or incorrect filings.

We built the firm and the platform together because the problem is not only knowledge. It is that the client cannot see the state of their own compliance. An accountant who holds the calendar in their own inbox leaves the seller blind until a deadline is missed.

Where we operate

Clients are UK limited companies, US LLCs (including non-resident founders) and sole traders selling online before they incorporate. A company can be both a UK Ltd and a US LLC, and often is.

Prices are published in pounds, euros and dollars from Finance, never converted at the checkout. The currency follows the country the company is registered in.

Our one qualification

We work with online sellers, and nobody else.

Running finance as a function only works if it says no to the work that is not its own. This is what that means in practice.

We take on

Sellers on a marketplace or their own store

  • Amazon, Shopify, eBay, Etsy and TikTok Shop sellers
  • UK companies, US LLCs, and both at once
  • Sole traders selling online, before they incorporate
  • Sellers moving from a general practice
We do not take on

Work that has nothing to do with a store

  • Local trades, cafés, salons and consultancies
  • Landlords and property portfolios
  • Payroll-only and CIS-only work
  • General personal tax with no online sales

If that is you, we will say so on the first call rather than three months in.

Standing

What you can check before you instruct us.

Four things, and what each one means for a seller handing over their books.

ISO 9001:2015Quality management, audited against a published standard rather than a self-declared one.
PI insuredProfessional indemnity cover for the advice and the filings TaxLunar prepares.
HMRC AMLSupervised for anti-money-laundering, which is the supervision any UK accountancy firm must hold.
Amazon SPNA member of the Amazon Service Provider Network, the directory Amazon points sellers to.

Questions

What people ask before they move to TaxLunar.

What does TaxLunar actually do?

TaxLunar is an accounting and tax firm for online sellers. It keeps the books from marketplace and store settlements, prepares and files VAT and US sales tax returns, prepares year-end accounts and tax returns, and owns the filing calendar. Clients follow all of it in the TaxLunar platform.

Is TaxLunar an accountant, or a piece of software?

Both, in that order. The firm is the service: our accountants do the bookkeeping, prepare the returns and file them. The platform is where the client sees the work. Software on its own moves data between systems or calculates a figure, and some products will file a return they calculated. What it does not do is keep the books, reconcile the settlements, prepare the accounts, or hold the whole calendar.

Which countries does TaxLunar cover?

The United Kingdom, the United States and the European Union. Clients are UK limited companies, US LLCs including non-resident founders, and sole traders selling online before they incorporate. A company can be registered in more than one of these at once, and often is.

Do I have to leave Xero, QuickBooks or FreeAgent?

No. Your books stay in your own Xero, QuickBooks Online or FreeAgent and TaxLunar works inside your ledger. The platform adds the filing calendar, documents, tickets and the view of what is due next.

What is included in a monthly package?

Bookkeeping, VAT, year-end accounts and the filings that belong to the package you choose. Prices are published in pounds, euros and dollars. Work outside the package, such as company formation, payroll or an additional EU country, is priced separately and shown before it starts.

How does moving from another accountant work?

What we need depends on what the previous accountant holds: the ledger, the open filings and the records for the current period. You send what you have, we agree the opening balances in writing, and the handover page sets out the order of work. Filings already in flight are tracked so that nothing falls between the two firms.

My returns are already late. Will you still take it on?

Yes. Open periods are brought up to date first, because a current return cannot be filed cleanly on top of an open one. Penalties already charged remain the company's responsibility, and we set out the position before any work starts rather than after.

Is the TaxLunar AI the accountant?

No. The AI assistant answers questions from your own records and shows the sources it used, so a question about your VAT position is answered from your books rather than a general article. Filing decisions stay with the accountants, and every action taken through a connected AI tool is confirmed before it runs.

/ / Get the app

Get TaxLunar on your devices

Same login, same figures on every device.

First to launch

iPhone and iPad

Needs Safari, kept up to date.

  1. Open TaxLunar in Safari.
  2. Tap Share, then Add to Home Screen.
  3. Open it from your home screen and sign in.
First to launch

Android

Needs Google Chrome, kept up to date.

  1. Open TaxLunar in Chrome.
  2. Tap Install app. If you do not see it, open the menu and choose Install app.
  3. Open it from your home screen and sign in.
First to launch

Computer, from the browser

Needs Google Chrome or Microsoft Edge on Windows or Mac.

  1. Open TaxLunar and sign in.
  2. Click the install icon in the address bar, then Install.
  3. Open it from the Start menu, taskbar or Dock.
Coming next

Windows app

Adds notifications, an unread count on the taskbar and dragging files in from Outlook.

  1. Download the installer.
  2. Run it. There is no administrator prompt.
  3. Sign in with your usual login.

Prototype: the signed installer is published here when the Windows app launches.

Planned, after Windows

Mac app

Until it arrives, install TaxLunar from Chrome or Edge on your Mac.

New to TaxLunar?

/ Contact

Contact

Ask TaxLunar AI for an answer now, or send your details. To buy, get started and pay. No call required.

Get an answer nowTaxLunar AI answers from our published plans and prices. If you still need us, it passes your enquiry to the TaxLunar team.

Or send your details below.

Step 1 of 2 · Your details

Enter your first name.
Enter your last name.
Enter a valid email address.
Enter a phone number with at least 7 digits.
Your company's name, or the name you want to use.

Prototype: nothing is sent.

Buy in the product

Pick the company, see the price, and pay. TaxLunar opens in Setup Mode.

United States+1 646 883 9472
United Kingdom+44 20 3355 5585
Hours
Monday to Friday, 9am to 5pm
Clients
Already with us?
/ Privacy

Privacy notice

Placeholder for the prototype. The live text comes from our compliance team.

What we collect

Your name, email and phone when you sign up or contact us, and your company details once you become a client.

Why

To contact you about your signup, provide our services and meet our legal duties, including anti-money-laundering checks.

AI guide

Chats with the AI guide are saved with your enquiry so our team doesn't ask you twice.

/ Terms

Terms of business

Placeholder for the prototype. The live terms come from our compliance team.

Engagement

Your engagement letter, signed in TaxLunar, sets out the services in your plan.

Fees

Fees are as published, plus VAT where it applies, billed monthly unless agreed otherwise. Your books app is not included. Keep Xero, QuickBooks Online or FreeAgent.