As of 28 Oct 2026, the panel rates Fakturia 3.5/5 and Frisbii (formerly billwerk+) 3/5 in Billing & Invoicing. Weighted by what each judge cares about, 6 of the 6 judges pick Fakturia and 0 pick Frisbii (formerly billwerk+). Fakturia scores higher on 4 of 6 criteria (European sovereignty, Payment collection, dunning & portability, Plans, pricing models & subscription lifecycle, plus 1 more). Frisbii (formerly billwerk+) scores higher on 1 of 6 criteria (Cross-border VAT & tax handling). Provenance — Fakturia: EU-Made; Frisbii (formerly billwerk+): EU-Made. Ratings are the AI panel’s opinion, formed from public evidence: how scores are made.
Fakturia and Frisbii land close on the billing core. Revenue and accounting handoff is level at 7.0 versus 7.0, with 6 tie votes; subscription engine (6.8 vs 6.7; 2 lean Fakturia, 1 leans Frisbii, 3 tie), invoicing compliance (6.8 vs 6.7; 1 leans Fakturia, 5 tie) and collections and dunning (6.5 vs 6.3; 1 leans Fakturia, 5 tie) barely separate them. Frisbii's one criterion lead is tax handling, 6.2 vs 5.8 — 2 judges lean Frisbii, 4 tie — on documented automatic VAT by customer country. The wider gaps are sovereignty (6.5 vs 4.2) and pricing transparency (6.7 vs 5.5), where 6 judges lean Fakturia, 0 lean Frisbii and 0 tie; Fakturia publishes prices, Frisbii publishes none. Weighted totals run Fakturia 6.1 to 6.9 against Frisbii 5.9 to 6.7; four judges' totals are on record, Fakturia higher in each — yet the criterion splits mean no single verdict falls out.
Choose Fakturia if
You need published prices before you can shortlist a vendor — Fakturia publishes prices, Frisbii publishes no prices, and 6 judges lean Fakturia on pricing transparency (6.7 vs 5.5).
Your procurement requires the vendor's legal jurisdiction on record — Fakturia's sovereignty attributes list its legal entity in Germany, Frisbii's jurisdiction is recorded as unknown, and 6 judges lean Fakturia on sovereignty (6.5 vs 4.2).
Your German B2B subscription model makes the subscription engine the deciding criterion — 2 judges lean Fakturia, 1 leans Frisbii, 3 tie (6.8 vs 6.7).
Your finance team weights invoicing compliance and collections and dunning most — each criterion has 1 judge leaning Fakturia and 5 tie (6.8 vs 6.7 and 6.5 vs 6.3).
Choose Frisbii (formerly billwerk+) if
You sell across countries and need VAT applied automatically by customer country — Frisbii documents this, while the judges found no public information on automatic VAT rates per country for Fakturia; 2 judges lean Frisbii on tax handling, 0 lean Fakturia, 4 tie (6.2 vs 5.8).
Tax handling carries the heaviest weight in your decision — it is the one criterion where Frisbii leads on the mean, 6.2 to 5.8.
Your subscriptions pass through many distinct lifecycle states — Frisbii documents seven, and 1 judge leans Frisbii on the subscription engine (2 lean Fakturia, 3 tie).
Read this comparison as one judge. Each weighs the same scores by what they care about.
The Billing Engineer
Wires billing into the product and gets paged when a webhook goes missing. Wants a documented API for usage events, idempotent webhooks, entitlements the app can read, a sandbox that behaves like production, and a migration path that moves subscriptions and payment tokens out again if the company outgrows the tool.
Fakturia
This judge's pick
Frisbii (formerly billwerk+)
Criterion by criterion
Plans, pricing models & subscription lifecycle
Fakturia
Trials with automatic conversion or termination, mid-period upgrades and downgrades billed day-exact with proration credit, minimum terms, automatic renewal, per-contract notice periods, usage-based billing and multi-currency invoicing are all stated, and customers self-serve contracts, payment methods and cancellations through a whitelabel portal with a cancellation button. I found no public information on metering usage events through an API, seat or volume tiers, price books, entitlements for the selling application, or versioned subscription history per customer.
Frisbii (formerly billwerk+)
The lifecycle is real engineering: seven subscription states including trial and on-hold, sub-state flags exposed via API, a named event set covering renewal, cancellation, uncancelled and pricing changes, plus plans with add-ons and credits, usage-based and hybrid pricing, three documented upgrade and downgrade routes, scheduled actions, contract management and a self-service customer portal. We found no public information on proration, metering usage through an API, quotes that convert into subscriptions, or multiple currencies and price books, which is what keeps this below the level of a full commercial-model engine.
Invoices & e-invoicing compliance
Fakturia
Invoices are issued as XRechnung and ZUGFeRD, described as hybrid PDFs with the XML embedded and law-conform since 2019, with GoBD-conform revision-safe archiving, exact service periods on every invoice line, and cancellations and corrections posted as counter-bookings instead of edits. The German 2025 B2B e-invoicing duty is addressed on the accounting-export page. I found no public information on Peppol sending, sequential numbering rules, or e-invoicing channels outside Germany.
Frisbii (formerly billwerk+)
Invoices are generated and archived automatically with configurable number prefixes and monthly, yearly or no reset, corrections happen as credit notes with their own number sequence while the original invoice stays untouched, and a refund automatically creates a credit note. Enabling e-invoicing produces Factur-X 1.0.07 / ZUGFeRD 2.3 hybrid PDFs on the EN16931 profile for invoices and credit notes alike, with DIN 5008 formatting warnings and per-country exemption texts. We found no public information on XRechnung, delivery through Peppol, GoBD-compliant numbering and unalterable archiving, or the e-invoicing mandates of named EU countries.
Cross-border VAT & tax handling
Fakturia
The feature list names VAT ID checking, the accounting export carries reporting for the German ZM summary and the MOSS/OSS digital-services scheme, and the vendor publishes a booking guide for reverse-charge invoices. I found no public information on automatic VAT rates per country and product type, a named VIES validation, or US sales tax.
Frisbii (formerly billwerk+)
VAT is determined automatically by customer country with a standard setting covering the normal rates of the twenty principal European countries, reverse charge applies to cross-border EU customers that have a VAT number on record, and zero-rate exemption texts exist for reverse charge, non-EU sales and domestic VAT groups, with the German 2020/2021 rate changes preset and automatic splitting of continuous services at rate-change dates. Two things cap it: we found no public information on validation of VAT IDs against VIES, and the captured pages state that EU business-to-consumer invoices simply assume you take part in the One-Stop-Shop procedure rather than describing OSS reporting data; we also found no public information on US sales tax.
Payment collection, dunning & portability
Fakturia
Collection is documented gateway-agnostic across named providers — SEPA, Stripe, Adyen, Unzer and PayPal — with direct debit either self-collected through online banking or handed to a provider, and return debits processed automatically through finAPI account matching. Dunning is multi-step in every tariff with unlimited escalation levels, individual texts per level and the original invoice attached, and migrating existing contracts in is offered as a service. I found no public information on smart retries or card updaters, a collection-agency handover, or a documented path to move subscriptions and stored payment details to another provider.
Frisbii (formerly billwerk+)
Dunning is properly engineered: smart failure classification retries temporary errors such as an exceeded credit limit and starts dunning immediately on permanent ones like an expired card, plans give full control over intervals and actions and can end in subscription cancellation, SEPA direct debit is supported with configurable return handling, and a beta AI collections agent contacts customers, answers replies and records promises to pay while the payments and receivables dashboards track failed transactions and collection performance. Gateway choice is documented only as Frisbii or partner payment gateway options, and we found no public information on card updaters, bank-transfer reconciliation, handover to a collection agency, or a migration path that moves subscriptions and payment tokens to another provider.
Revenue reporting & accounting handoff
Fakturia
Finance gets a certified direct DATEV connection on booking-data-service 2.0 since early 2024, invoice PDFs pushed together with the booking records, automatic passive revenue deferral released month by month, postings to individual debtor accounts or a central receivables account, Lexware CSV, ZM and OSS reporting, and a REST API documented with OpenAPI plus webhooks on contract start, payment, cancellation and dunning. I found no public information on MRR, ARR or churn metrics, data-warehouse sync, or a complete export documented for a successor system to import.
Frisbii (formerly billwerk+)
Finance gets MRR, ARR and churn dashboards with retention KPIs and an AI forecasting add-on, plus a genuinely deep DATEV handoff: SKR03 or SKR04 chart selection, posting-key overrides, revenue accounts configurable per tax country, rate and currency with separate VAT accounts, automatic debtor IDs, EXTF or ASCII formats, and monthly, weekly or daily exports delivered to SFTP, Google Drive or OneDrive, alongside a documented API with subscription events and a Salesforce integration. We found no public information on deferred revenue schedules or recognition stated to IFRS 15 / ASC 606, MRR movements explained per customer, data-warehouse sync, or a complete export of customers, subscriptions and invoices that a successor system could import.
European sovereignty
Fakturia
The chain is documented as German: Luminea IT Services GmbH with a Munich commercial-register entry and private ownership, hosting in a TÜV-certified Nuremberg data centre with a private-cloud option on the vendor's own infrastructure, a contractual data-processing agreement obligation, and return and deletion of data after termination. The privacy policy names processors with locations, including US ones for website chat and security, while another capture states no data is passed to third countries, and the pages give different signals on scope. I found no public information on ISO 27001 or SOC 2 certification for the product, or a formal subprocessor list for the billing chain itself.
Frisbii (formerly billwerk+)
The contracting entities are German — Frisbii Germany GmbH in Frankfurt, registered in the commercial register, plus Frisbii Media GmbH in Kempten — a data processing agreement is published in English, German, Danish and French with a German data protection officer, and the website's subprocessors are listed with locations and safeguards such as standard contractual clauses and Data Privacy Framework listing. However, the captured pages leave the hosting of the core billing platform and its data residency unconfirmed — only the Salesforce-deployed product is described, hosted by Salesforce as a subcontractor — and we found no public information on security certifications such as ISO 27001 or SOC 2.
Pricing transparency
Fakturia
The Flex series is computable from the public page: 0 € Grundgebühr with a monthly net-revenue fee of 1,9% (Flex one) or 2,4% (Flex two), three included users with each further user at 25,- € / Monat, 7.500 API-Aufrufe / Monat included with extras at 0,004 € / Aufruf, premium onboarding at 1.200 EUR einmalig, prices net plus statutory VAT, monthly cancellation on four weeks' notice, and the page dated August 2026. Dunning, ZUGFeRD/XRechnung and the DATEV interface sit inside the listed tariffs rather than as unpriced add-ons. The Business and Enterprise tiers set term, amount and payment per order sheet, so their cost is not publicly derivable.
Frisbii (formerly billwerk+)
Starter at €49/mo and Growth at €299/mo are published with seat counts, a 0.95% charge on processed billing, VAT stated as additional to the advertised plan price, and cancellation terms of three months' notice on Starter. Both Scale tiers are quoted as tailored pricing with a talk-to-sales path, and merchant bank processing fees, per-payment-method fees and customer/card import fees are referenced but not quantified on the captured pricing page, so a real annual cost is not computable for larger volumes.
Sovereignty, side by side
Dimension
Fakturia
Frisbii (formerly billwerk+)
Legal entity
Not determined
Not determined
Ownership
Not determined
Not determined
Data residency
Not determined
Not determined
Subprocessors
US CLOUD Act reach
US CLOUD Act reach
Facts, side by side
Only facts both products carry under the same definition — anything else would not be a fair row.
Questions about Fakturia and Frisbii (formerly billwerk+)
Which is better, Fakturia or Frisbii (formerly billwerk+)?
As of 28 Oct 2026, the panel rates Fakturia higher: 3.5/5 against 3/5. Weighted by what each judge cares about, 6 of the 6 judges pick Fakturia and 0 pick Frisbii (formerly billwerk+). Which one fits depends on the criteria that matter to you; the table on this page shows both side by side, and each judge’s reading has its own page. Both were scored by the same AI bench under the same rubric, from public evidence only, as the methodology describes.
Is Fakturia or Frisbii (formerly billwerk+) European?
Fakturia is European (EU-Made). Frisbii (formerly billwerk+) is European (EU-Made). Provenance is read from each company’s own legal pages: who builds it and who owns it.