Best Tax Software for Amazon and eBay Sellers in Germany: 2026 Comparison

The best software depends on what you want to file yourself and where your numbers come from. If you upload Amazon or eBay reports and want to send the VAT return and OSS return yourself, you need a tool that does both. We compare VAT GPT with ten other options. VAT GPT is our own product.

Last updated: 29 October 2026. All statements about other providers come from their own websites, retrieved on 29 October 2026 (quotes translated from German); statements about VAT GPT come from us.

In short

  • VAT return: Software that supports ELSTER can send it; on 29 Oct 2026 ELSTER lists 639 software products.
  • OSS return: The BZSt accepts it only electronically through the BZStOnline portal; not every software sends it for you.
  • Marketplace data: Check whether the tool reads Amazon and eBay reports itself or only through partner tools.

Which tax software fits Amazon and eBay sellers?

Four kinds of solutions exist, depending on the task:

  • File yourself, form in the browser: Mein ELSTER, the tax authorities' online office.
  • Bookkeeping with export or accountant collaboration: DATEV Unternehmen online, WISO MeinBüro, sevDesk, Lexware Office, Amainvoice, Taxdoo.
  • Income tax returns for individuals and self-employed people: WISO Steuer, Taxfix, Smartsteuer.
  • Import marketplace reports, calculate and send: VAT GPT.

What this means for you: First decide who does the bookkeeping and who sends the returns. That usually leaves two or three tools.

Comparison: VAT GPT and the well-known tools

The table states only what each provider writes on the page we checked. "Not stated" means the checked page says nothing about it; the product may still offer it. Prices without discount as shown on the page, as of 29 Oct 2026.

ToolIntended for (per provider)VAT returnOSSAmazon/eBay dataPrice per provider
VAT GPTBrowser tax software for online sellers on Amazon and eBay, self-employed people, small businessescreate; send via ELSTER with Procalculate; send to the BZSt with Proimport Amazon and eBay CSV reportsFree; Go 30 days free with all Pro features; Pro €49 per month or €444 per year, incl. VAT
Mein ELSTEROnline tax office of the tax authoritiesform in the browser; "free of charge in Mein ELSTER"; XML file from software can be uploadednot there: OSS goes through the BZStOnline portalnot stated"Most tax forms … free of charge"
DATEV Unternehmen onlineCollaboration between accounting firm and clientsnot statednot statednot stated€11.56 per month
WISO MeinBüroAccounting software for freelancers, founders and small businessesvia ELSTER interfacenot statednot statedBuchhaltung plan €19.90 per month (annual plan, excl. VAT)
WISO SteuerTax return, incl. for self-employed peoplenot statednot statednot stated€35.99 annual plan, €45.99 single purchase
sevDeskAccounting, invoicesdirectly to the tax office via "encrypted ELSTER connection"invoices under the OSS schemevia the Billbee interfacePlans from €0 to €34.90 per month, excl. VAT
Lexware OfficeAccounting, invoicesvia ELSTER, without your own ELSTER certificatenot stated"A direct connection of online shops is not possible"; via billbee or easybillVersions S to XL: €7.90 to €32.90 per month, excl. VAT
TaxfixTax return, "now also for self-employed people"not statednot statednot statedBasic from €39.99
SmartsteuerIncome, VAT and trade tax returnsnot statednot statednot stated€39.99, payable on submission
TaxdooAccounting and tax advice for online sellers"You file the VAT return yourself from the software" and "Your tax adviser files the VAT return" (both on the page)in the monthly close "incl. BWA, OSS, UStVA, ZM""Interfaces to Amazon, Shopify, Paypal etc."no price on the page; discussed in an intro call
AmainvoiceAccounting for Amazon sellersnot stated"calculates the VAT for the correct OSS return"via API with Seller Central€43 per month up to 200 documents (valid from 9 Feb 2026)

What this means for you: For the question "does the tool read my Amazon and eBay numbers and send for me?" the table separates the tools clearly. Prices are built differently (per plan, per document, per year) and are only partly comparable.

What must tax software for marketplace sellers do?

Five points decide in daily use:

  1. Data source: Does the software read your Amazon or eBay report, or do you retype numbers?
  2. VAT return: It must go electronically to the tax office in the official data format (section 18(1) UStG). Check whether the software sends it itself.
  3. OSS: If you sell to consumers in other EU countries above the EUR 10,000 threshold, you owe the VAT of the destination country (section 3c UStG) and can report it quarterly to the BZSt through the OSS (section 18j UStG) instead of registering in each country. The OSS return is submitted there electronically.
  4. Other returns: EÜR (profit statement), trade tax and income tax at year end.
  5. Preview: You should see the result before anything is sent.

What this means for you: A tool that only writes invoices does not cover points 1 to 3. Ask the provider directly, or run one real month in a trial.

Why we build VAT GPT for Amazon and eBay sellers

These points describe VAT GPT; they do not rate the other tools:

  • One place for several returns: VAT return, annual VAT return, OSS return, EÜR, trade tax and income tax.
  • Marketplace reports as the starting point: Amazon and eBay CSV reports are imported and VAT for Germany and the EU (OSS) is broken down.
  • Sending with Pro: via ELSTER to the tax office, the OSS return to the BZSt.
  • Receipts by AI: The AI reads amounts, countries and tax rates from invoices; you check and confirm.
  • Fixed price per plan: Pro costs €49 per month or €444 per year, incl. VAT.

What this means for you: If you sell on Amazon and eBay and want to send the returns yourself, you get calculation and filing in one tool. VAT GPT is not tax advice.

How VAT GPT helps: upload, check, send

  1. Upload: your Amazon or eBay CSV report and your invoices. The AI reads amounts, countries and tax rates.
  2. Check: VAT GPT breaks down VAT for Germany and the EU (OSS) and prepares the VAT return, monthly or quarterly. You review the result.
  3. Send: with VAT GPT Pro via ELSTER to the tax office, the OSS return to the BZSt.

Try it free.

What this means for you: For a test, your last monthly report and your invoices are enough.

When another tool fits better

  • Your accountant books in DATEV: DATEV Unternehmen online or an export from accounting software is the natural choice.
  • You want bookkeeping and tax advice as one package: Taxdoo describes this model for online sellers.
  • You sell only in Germany and little: Mein ELSTER is often enough, see Mein ELSTER or software.
  • You want Amazon data through an API: Amainvoice describes an API connection.

What this means for you: "Best software" exists only for one task, not in general. Pick the tool whose row in the table covers your task.

Frequently asked questions

What is the best tax software for Amazon and eBay sellers? It depends on the task. To calculate and self-file VAT and OSS returns from marketplace reports, VAT GPT is our offer; for bookkeeping with accountant export, the providers in the table describe their own solutions.

Which software sends the VAT return itself? Software that supports ELSTER. ELSTER lists 639 products; the manufacturers state there that they support ELSTER. Details: VAT return software.

Can I file the OSS return through ELSTER? No. The OSS return goes through the BZStOnline portal to the Federal Central Tax Office (BZSt).

What does VAT GPT cost? Free (basic features), Go (30 days free with all Pro features) and Pro at €49 per month or €444 per year, each incl. VAT.

Is the comparison complete? No. It names eleven solutions and checks statements only on the pages listed. If a statement is no longer correct, write to us and we will check it.

Further reading

Not tax advice: the content does not replace individual advice.

Sources