WISO Alternative 2026: 6 Tools Compared

WISO is one of the best-known names in German tax and accounting software. But behind the Buhl Data brand sit two very different products – WISO Steuer for the income tax return and WISO MeinBüro for invoices and bookkeeping. If you run a business as a freelancer, sole trader or GmbH director and need both, you quickly pay twice and juggle two programs.

That is exactly where the case for switching begins: cloud-native tools with genuine AI automation, built-in e-invoicing and direct ELSTER filing are far ahead of WISO's desktop-heavy architecture in 2026. If bookkeeping feels like daily work rather than something you hand off, the alternatives are worth a look.

Here are the 6 best WISO alternatives for 2026 – sorted by strengths, price and target audience, with honest pros and cons.

The essentials at a glance

• WISO is two products: WISO Steuer (income tax, around €24–45/year) and WISO MeinBüro (invoices + bookkeeping, roughly €9–99/month on the web plan). If you need both, you pay twice.
• The biggest 2026 gap: no genuine AI categorisation and only rudimentary e-invoicing – two things modern cloud tools handle automatically.
• Cheapest alternative with automation: with Norman, invoicing and bookkeeping are free forever, and tax filing starts at €9/month – one tool for bookkeeping and tax.
• For DATEV firms: Lexware Office or sevDesk (from around €11/month) with a clean export.
• Tax return only, no budget: ELSTER is free but entirely manual.

What WISO is, and where it hits its limits

There are two products under the WISO name from Buhl Data:

• WISO Steuer – software for the income tax return, originally built for employees. It supports Anlage G (trade) and Anlage S (self-employed), costs roughly €24–45 per year for the full version and covers up to five tax returns.
• WISO MeinBüro – business software for invoices, quotes and basic bookkeeping. On the web plan (annual billing), 2026 tiers run from around €9/month (XS) to €39/month (M), with the large L package at around €99/month – all net.

Both products are solid on their own. The friction starts the moment you, as a business owner, need both sides: ongoing bookkeeping and the tax return. Then you have two subscriptions, two interfaces and data silos that don't mesh cleanly. Common reasons to switch:

• No AI-driven categorisation – you sort receipts and bank transactions by hand. That costs hours a month.
• Weak e-invoicing – XRechnung and ZUGFeRD have been mandatory to receive in B2B since 1 January 2025, but are only rudimentary in MeinBüro. Our e-invoicing obligation guide explains what that means in practice.
• Two separate products – bookkeeping and tax filing are not in one tool.
• Limited GmbH depth – corporate tax and more complex GmbH bookkeeping go beyond MeinBüro.
• Desktop-heavy interface that feels dated next to cloud tools and ties you to one machine.

1. Norman: AI bookkeeping for the self-employed and GmbHs

Who it's for: Freelancers, sole traders and small UG/GmbHs who want to genuinely hand receipts and bookkeeping to AI.

Strengths:

• AI categorises bank transactions automatically by SKR03/SKR04
• Direct filing of VAT return (UStVA), EÜR and income tax to the tax office – exactly what you'd have to split across two WISO products
• E-invoicing via XRechnung and ZUGFeRD at no extra cost; see e-invoicing with Norman
• Invoicing and bookkeeping in one cloud tool, no desktop install, work from anywhere
• MCP server and CLI for developers

Weaknesses: No classic DATEV export, no WISO import function (manual switch).

Price: Invoicing and bookkeeping are free forever, with no limits. You only pay for tax filing: the Klein plan starts at €9/month. Details on the pricing page.

2. Lexware Office: The market leader for small businesses

Who it's for: Self-employed and GmbHs whose tax advisor works on DATEV.

Strengths: Very widespread, many firms know the exports, full double-entry bookkeeping for the GmbH possible, solid invoicing.

Weaknesses: Little AI automation, a lot of manual posting, price climbs fast: plans run roughly €11/month (S) to €28/month (L) net in 2026. See the Lexoffice alternatives comparison.

3. sevDesk: Established, with DATEV export

Who it's for: Small businesses that need a proven tool with a DATEV interface.

Strengths: Modern interface, fast bank reconciliation, clean DATEV export, good reporting templates.

Weaknesses: The mid tier starts at around €22/month net, AI stays rudimentary. More in the sevDesk alternatives comparison.

4. Accountable: Tax-first for solo freelancers

Who it's for: Solo freelancers without complex bookkeeping.

Strengths: Clear onboarding, direct VAT and income tax filing, good mobile app.

Weaknesses: The "Taxes" plan is around €30/month, relatively pricey for a solo setup. No GmbH support. Detailed comparison in the Accountable alternatives comparison.

5. FastBill: Quick invoices out the door

Who it's for: Freelancers who mostly care about the invoicing module.

Strengths: Clean invoicing UX, banking connection, DATEV export.

Weaknesses: No direct tax filing to the tax office, AI automation largely missing. Entry plan from around €9/month net.

6. ELSTER: Free, but no automation

Who it's for: Anyone who only wants to submit tax returns to the tax office and sorts receipts themselves.

Strengths: The official, completely free portal of the tax administration.

Weaknesses: No bookkeeping, no receipt management, no bank connection, no e-invoicing. You work out every figure yourself. If you use ELSTER, read our guide on doing your own bookkeeping first.

WISO alternatives compared

As of 2026; prices and tier thresholds vary by provider and billing period.

Which WISO alternative fits you?

The choice depends less on feature count than on your working profile: do you want to genuinely hand off bookkeeping, does your tax advisor demand a DATEV export, or do you really just need invoices? Three rules of thumb cover most cases.

• You want to genuinely hand off bookkeeping: Norman. AI is the core here, not an add-on, and you only pay for tax filing.
• Your tax advisor demands a DATEV export: Lexware Office or sevDesk. See also the best accounting software for the self-employed.
• You only need invoices: FastBill (€9 plan) or Norman's free invoicing module.

One thing to keep in mind across all alternatives: GoBD-compliant bookkeeping is mandatory: receipts must be archived unalterably for 10 years.

How to switch from WISO to a cloud alternative

Almost no cloud tool offers a real data import from WISO – Buhl Data's formats are proprietary. In practice the switch works like this:

1. Set a cut-off date. The cleanest is the turn of the year or the start of a quarter. Until the cut-off you finish posting in WISO, after it in the new tool.
2. Close open items. File your last UStVA and your tax return in WISO so no filing slips through the gap.
3. Reconnect your bank account. In the new tool you link your business account via the bank interface – from the cut-off, transactions flow in automatically.
4. Move master data. Enter your client list, tax number and standard invoice texts once. With a manageable client base that takes half an hour.
5. Keep the WISO archive. You must retain your old WISO data for 10 years under the GoBD retention rule – export it as a PDF/database backup before cancelling the subscription.

FAQ on WISO alternatives

What is the difference between WISO Steuer and WISO MeinBüro?

WISO Steuer is a pure tax-return program for income tax (around €24–45/year). WISO MeinBüro is ongoing business software for invoices and bookkeeping (subscription from around €9/month). Needing both means buying two separate products – exactly what integrated tools like Norman avoid.

Is there a free WISO alternative?

For pure tax filing, ELSTER is completely free but has no automation whatsoever. For invoicing and bookkeeping, Norman's invoicing and bookkeeping module is free forever with no limits – you only pay for tax filing from €9/month.

Which WISO alternative supports XRechnung and ZUGFeRD e-invoicing?

Norman, Lexware Office and sevDesk support e-invoicing. With Norman, XRechnung and ZUGFeRD are included at no extra cost – important because receiving such invoices in B2B has been mandatory since the start of 2025.

Can I export my data from WISO?

Almost no cloud tool offers a direct 1:1 import, as Buhl's formats are proprietary. In practice you switch at a cut-off date (start of year or quarter) and re-enter master data once. Keep the WISO archive for 10 years under the GoBD retention rule.

Is switching worth it for a GmbH?

For full GmbH accounting with corporate tax, many rely on Lexware Office or sevDesk with a DATEV export for the tax advisor. Small UGs and GmbHs with a manageable receipt volume are often cheaper off with Norman's AI bookkeeping – more under taxes for UG/GmbH.

Conclusion

WISO is solid, but the separate products and the lack of AI no longer make it the first choice for the self-employed and GmbHs in 2026. If you want to bundle bookkeeping and tax filing in one modern cloud tool, an AI-first approach serves you better. Norman sets up in 30 seconds and costs nothing as long as you don't file a tax return, a lower-risk trial than a 30-day test on a €30 plan.