FastBill alternative: Solobuch at a glance
FastBill is online software for invoices, quotes and bookkeeping tasks in the plans Solo, Plus, Pro and Premium. This page puts FastBill and Solobuch side by side factually. Which solution fits better depends on your requirements.
What Solobuch is meant for
Solobuch is aimed at freelancers, small business owners and small self-employed people who mainly write invoices. Its scope focuses on invoices as XRechnung and ZUGFeRD, expenses, clients and exports. You can start free with 3 invoices per month. Solobuch plans and pricing
The solutions side by side
| Criterion | Solobuch | FastBill |
|---|---|---|
| Focus | Writing invoices for freelancers, small business owners and small self-employed people. | online software for invoices, quotes and bookkeeping tasks in the plans Solo, Plus, Pro and Premium |
| E-invoice (XRechnung/ZUGFeRD) | XRechnung and ZUGFeRD. | According to the provider, included in all plans (ZUGFeRD/XRechnung). |
| DATEV / bookkeeping | DATEV export depending on the plan; analytics and tax forecast; no payroll. | Per the pricing page (as of 28.10.2026), DATEV export is listed for Solo and the DATEV invoice data service for Pro; the assignment for Plus and Premium is unclear there. Plan comparison at the provider. |
| Getting started and prices | Free plan with 3 invoices per month; further plans and prices: Pricing. | Per the pricing page (as of 28.10.2026), no permanently free plan, but a 14-day free trial. Prices per month excl. VAT (billed monthly / annually): Solo €10 / €9, Plus €15 / €14, Pro €30 / €27, Premium from €59 / €53. |
Statements about FastBill come from the provider’s website and may change. Please check there for current information.
Decision guide: which solution fits you?
These questions help you choose regardless of provider. Answer them for your situation and check the answers with each provider yourself.
- Do you only need invoices and expenses, or full bookkeeping including VAT returns?
- How many invoices do you issue per month, and how many are included in the cheapest plan?
- Which e-invoice formats (XRechnung, ZUGFeRD) and profiles are generated, and can you read incoming e-invoices?
- Does your tax advisor work with DATEV, and which plan includes the export?
- Are you a small business under § 19 UStG? Then the software should add the mandatory notice automatically.
Common questions about switching
When is FastBill a better fit than Solobuch?
If you need features Solobuch does not offer, such as payroll, double-entry bookkeeping or inventory management, check on the website of FastBill whether they are included. Solobuch focuses on invoices, expenses, clients and exports.
What should I consider when switching invoicing software?
Keep your previous invoices in their original form, usually for eight years. Continue invoice numbers without gaps and find out beforehand in which format your current provider exports data.
Is Solobuch really free to use?
Yes, one plan is free permanently: 3 invoices and 3 expenses per month, with a watermark on the invoice. Further plans are listed on the pricing page.
Want to try Solobuch? In the free plan you can create invoices as XRechnung or ZUGFeRD.
Create an e-invoice in the generatorMore provider overviews: sevDesk · Lexware Office · WISO MeinBüro · easybill · Accountable · Papierkram
Sources
FastBill is a trademark of its respective owner. Solobuch is not affiliated with FastBill.
All information on this page is current only as of 28 Oct 2026. The linked pages may change afterwards.
This article is for general information and does not replace tax or legal advice in individual cases. Deutsches Recht / German law.