FastBill alternatives
The 5 best FastBill alternatives in 2026
The short answer: the best FastBill alternative for service businesses is Billy (from €9/month) — the same entry price as FastBill Solo, but with invoices from an AI prompt and automatic dunning included in the entry plan instead of sold as a paid add-on, plus Austria in the same account. Billy is our own product; where FastBill is better, we say so just as plainly.
Because FastBill is solid: VAT filing via ELSTER in every plan and a template editor with custom fonts and mm-precise positioning are among the strongest in the market. The typical reasons to switch are the dunning add-on, recurring invoices only from Pro (€27), the single template on Solo, the missing official EÜR and the Germany-only focus. Here are the five serious options — verified as of July 2026.
All alternatives at a glance
| Billy | sevDesk | Lexware Office | easybill | Odoo | |
|---|---|---|---|---|---|
| Best for | Invoices from AI prompts & automatic dunning | Full bookkeeping (EÜR, VAT filing) with invoicing | Full bookkeeping with ELSTER, Germany only | Marketplace sellers (Amazon, eBay, Shopify) | Growing companies with ERP needs (inventory, CRM, manufacturing) |
| Document limit | from 50/month; unlimited on Pro | Free: 3 invoices/month; paid unlimited | No limit stated (fair use per T&Cs) | Free: 50/month; Starter: 250/month | No limit — even on "One App Free" |
| Price | from €9 / month | Free (3 invoices/month); from €12.90 / month | from €12.90 / month (plan M) | Free (50 docs/month); from €9 / month | "One App Free"; then per user/month |
| Invoice from AI prompt | Yescore feature | No | No | No | No |
| All features via AI assistant | Yesassistant reaches every feature | Nosuggestions only (receipts, bookings) | Nosuggestions you must accept | NoAI drafts text, you decide | NoAI in places (documents) |
| Professional templates | Yesdesigned templates | Yes11 layouts, 6 of them Premium | Partially5 base layouts | Partially2 base layouts you clone | Partiallyconfigurable layouts |
| Live preview | Yes | – | Nopreview is a separate step | Nopreview on click | – |
| Recurring invoices | Yesset up in one sentence | Yes | Yesseries invoices | PartiallyProfessional (€25) and up | Yes |
| Automatic email sending | Yesinvoices & reminders, from the entry plan | Partiallyseries invoices optionally automatic; dunning manual | Partiallyseries invoices optionally automatic; no automatic dunning | Partiallyseries from Professional, dunning Premium only | Partiallyfollow-up reminders automatic once configured |
| Bookkeeping | Nodeliberately not | Yesin the accounting plan | Yesplan L and up | No | Yesaccounting module |
| E-invoicing | NoPDF invoices | Yeseven in the free tier | Partiallysending from plan M | Yeseven in the free tier | Yes |
All pricing and feature claims per the vendors, verified on August 2, 2026. Prices net; subject to change.
Billy
The AI invoicing appBilly is the alternative for everyone who uses FastBill mainly for invoicing — and does not want to pay extra for a dunning add-on. The AI assistant creates invoices, quotes and reminders from one sentence, sends them after your confirmation, and chases late payers automatically — from the entry plan, at no extra charge.
Full transparency, since Billy is our product: it is deliberately NOT accounting software. If you want to file your VAT return straight from the tool — FastBill’s signature strength — Billy does not offer that.
Strengths
- Invoices from an AI prompt — none of the other tools here can (as of July 2026, per their own sites)
- Automatic dunning from the entry plan — no add-on
- Germany AND Austria in one account (§14 UStG / §11 öUStG)
- Professionally designed templates with live preview
- Set up in minutes, cancel monthly
Weaknesses
- No bookkeeping: EÜR, VAT filing and DATEV export are deliberately absent
- No e-invoicing (XRechnung/ZUGFeRD) — PDF only
- No permanent free plan (7-day trial, no credit card)
- Web app rather than a native mobile app
sevDesk
The all-in-one accounting solutionsevDesk is the FastBill alternative for anyone for whom the VAT return is not enough: here you get full bookkeeping with EÜR and receipt management — exactly what FastBill does not officially cover. Add 11 invoice layouts (6 of them Premium), native iOS and Android apps and e-invoicing even in the free tier. For Austria there is a separate offering (sevdesk.at).
On dunning it is no better than FastBill, though: reminders are sent manually per invoice, with dunning levels only in the accounting plan. And on template design sevDesk trails FastBill’s editor — colors from a palette only, custom layout only as a paid service.
Strengths
- Mature bookkeeping: EÜR and VAT filing in the accounting plan
- E-invoicing (XRechnung/ZUGFeRD) even in the free tier
- 11 invoice layouts, 6 of them Premium
- Native iOS and Android apps
- Austria via a separate offering (sevdesk.at)
Weaknesses
- Dunning is manual per invoice; dunning levels need the accounting plan
- Free tier limited to 3 invoices/month
- Colors from a palette only; custom layout only as a paid service
- No AI that creates documents — receipt capture and a support chatbot only
Lexware Office
The accounting classic (formerly lexoffice)Lexware Office is the most established FastBill alternative for anyone moving from VAT prep to full accounting: EÜR, VAT filing via ELSTER and payroll add-ons included. Note that the cheapest plan S cannot write invoices — realistically you start at €12.90 on plan M, and there is no annual discount.
Two things worth knowing: per its own help center it has no automatic dunning function (it points to a paid third-party extension), and on template design its 5 base layouts fall far short of FastBill’s editor.
Strengths
- Mature bookkeeping: EÜR, VAT filing via ELSTER (from plan L)
- Over 230,000 customers, very approachable interface
- Native iOS and Android apps
- E-invoicing: receiving on all plans, sending from M
Weaknesses
- No automatic dunning — per the vendor itself
- Germany only; Austria explicitly not supported
- Plan S (€7.90) cannot write invoices
- Only 5 base layouts, no freely placed text fields
easybill
The e-commerce specialisteasybill is the best FastBill alternative for online sellers: orders from Amazon, eBay and your own shop are billed automatically, OSS and shipping labels included. Its permanently free plan (50 documents/month, e-invoicing included) is the most generous in the field — and on template design, with custom fonts and Liquid templates, easybill plays in FastBill’s league.
The flip side is tier gating: recurring invoices need Professional (€25), and the automatic dunning that genuinely self-sends is Premium only (€37). A VAT-filing connection like FastBill’s is missing.
Strengths
- Permanently free plan: 50 docs/month incl. e-invoicing
- Strongest marketplace integrations (Amazon, eBay, Shopify, OSS)
- Automatic dunning that genuinely self-sends (Premium)
- Own fonts and colors, Liquid template language
Weaknesses
- Automatic dunning only in the Premium plan (€37)
- Recurring invoices only from Professional (€25)
- No native mobile app
- No Austrian version, no bookkeeping (EÜR)
Odoo
The open-source ERP suiteOdoo is the right FastBill alternative when invoicing is only the beginning: the modular suite covers CRM, inventory, manufacturing and projects, and a single app is permanently free. Austria is supported via localization.
The price is complexity: setup takes time (or an implementation partner), billing is per user per month with prices that vary by country, and dunning consists of follow-up rules you configure yourself.
Strengths
- "One App Free": one app permanently free, unlimited users
- Grows with you: CRM, inventory, manufacturing, projects in one suite
- Germany and Austria via localization
- E-invoicing and an accounting module available
Weaknesses
- Setup takes time or a partner — no minutes-to-start
- Per user/month, prices vary by country
- Dunning only as self-configured follow-up rules
- Heavily oversized for pure invoice senders
How we evaluated
All pricing and feature claims come from the vendors’ own pricing and help pages, last verified on 31 July 2026 — including the inconvenient details like tier gating and dunning limitations. Where a vendor does not document something, we do not claim it. Billy is our own product: we rank it #1 for the use case it is built for, and we state its weaknesses as plainly as everyone else’s.