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

For Amazon and eBay sellers in Germany who want to send the VAT return and the OSS return themselves, VAT GPT is our own product: it imports Amazon and eBay CSV reports and, with Pro, sends the VAT return via ELSTER and the OSS return to the BZSt. For bookkeeping and invoices, sevDesk and Lexware Office name the VAT return via ELSTER according to the providers, and reach Amazon and eBay data through partner tools such as Billbee or easybill; Taxdoo and Amainvoice connect to Amazon directly according to the providers; Mein ELSTER offers the form in the browser. We compare VAT GPT with twelve other options side by side: for each, the table shows according to the provider whether it prepares the VAT return, covers the OSS return and imports Amazon or eBay data. VAT GPT is our own product.

Only VAT GPT sends all three returns itself. Of the tools we compare, according to the providers' own pages (checked 3 November 2026), only VAT GPT submits the OSS return itself to the BZSt, plus the VAT advance return and the annual VAT return via ELSTER to the tax office, calculated from your Amazon and eBay reports. You do not have to go into Mein ELSTER or the BZStOnline portal yourself. With the others, you upload the OSS file in the BZStOnline portal yourself, or a tax adviser or the provider's service files it for you. Sending needs Pro. OSS software compared

Last updated: 3 November 2026. All statements about other providers come from their own websites, retrieved on 29 October 2026 (Billbee and Xentral added, Taxdoo and Amainvoice retrieved again on 3 November 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?

Five 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.
  • Orders, invoices, shipping and stock across all sales channels: Billbee (multichannel software, per provider), Xentral (ERP system, per provider).

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; Billbee, Xentral, Taxdoo and Amainvoice as of 3 Nov 2026. Billbee and Xentral describe themselves as multichannel software and an ERP system: their checked pages say nothing about sending the VAT return or the OSS return, so the statement "Only VAT GPT sends all three returns itself" above does not refer to them.

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 and provides the necessary data and OSS reporting lists for your return""Connect your Seller Central"€43 per month up to 200 documents (valid from 9 Feb 2026)
Billbee"The simple multichannel software in the cloud": orders, invoices, stock and shippingnot statednot statedover 150 interfaces, "including Shopify, WooCommerce, Amazon, eBay, Etsy"usage-based, "base fee of €9" per month (excl. VAT)
Xentral"The AI ERP for scaling merchants": channels, warehouse and bookkeeping, DATEV exportnot statednot stated"Ready-made interfaces for Amazon"; eBay shop connects "directly"€99 to €849 per month, "depending on revenue & shipping volume"

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. To check the company behind it: Is VAT GPT legit?

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.
  • You mainly need order handling, shipping and stock across all channels: Billbee and Xentral describe this; for the tax returns you then also need a tax tool or a tax adviser.

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.

What is the best software for Amazon and eBay sellers? It depends on the job. For orders, invoices, shipping and stock across all channels, Billbee and Xentral name interfaces to Amazon and eBay according to the providers. For the taxes from your Amazon and eBay reports (VAT return, OSS return, EÜR), VAT GPT is our own product; with Pro it sends the VAT return via ELSTER and the OSS return to the BZSt.

What is the best tax software for Amazon and eBay in Germany? There is no single best one for everyone; the table above shows what each tool does according to its provider. Taxdoo combines bookkeeping and tax advice for online sellers, Amainvoice prepares Amazon data and OSS reporting lists, Billbee and Xentral run orders and stock. VAT GPT, our own product, imports Amazon and eBay CSV reports and, with Pro, sends the VAT return via ELSTER and the OSS return to the BZSt.

What is the best software for Amazon sellers in Germany? It depends on the job: to import Amazon reports and send the VAT return (via ELSTER) and the OSS return (to the BZSt), VAT GPT with Pro is our own product. Taxdoo and Amainvoice connect to Amazon directly according to the providers, sevDesk and Lexware Office through partner tools such as Billbee; the table above shows what each tool does according to its provider.

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 thirteen 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

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