Austria · Agentic SaaS development

SaaS Development for Austria: Billing, VAT and Tenants

What will a customer in Austria actually be charged, and how will they want to pay? The standard VAT rate is 20 percent, cross-border sales to businesses elsewhere in the EU usually fall under the reverse charge, and while cards and wallets lead online payments, eps-Überweisung, an online bank-transfer method built with the country's banks, is offered by more than 11,000 online shops. Get tax treatment wrong and the error repeats on every invoice.

Curiosive builds SaaS products from Ankara, Türkiye, with AI coding agents working under senior engineer review. Engineers design the multi-tenant data model, tenant isolation, plan and entitlement logic and the billing webhooks. Agents produce the CRUD screens, admin views, migrations and test suites around them, and nothing merges without a person reading the diff. Ankara is one or two hours ahead of Austria depending on the season, so most of the working day overlaps.

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VAT and invoicing for a SaaS product sold in Austria

The federal business portal USP, last updated 1 July 2026, lists the standard Umsatzsteuer rate as 20 percent, with reduced rates of 4.9, 10 and 13 percent as exceptions under § 10 UStG. Under EU VAT rules, a business customer in another EU country usually pays VAT itself through the reverse charge, although there are several important exceptions. Electronic services sold to consumers are taxed in the customer's country, with a EUR 10,000 threshold below which they may be subject to VAT in the seller's own country, and the One Stop Shop lets a seller declare that VAT through one registration. Austria has no B2B e-invoicing mandate and no announced rollout date, according to Sovos. Council Directive (EU) 2025/516 changes cross-border billing: from 1 July 2030, invoices for intra-EU supplies between businesses, including reverse-charge supplies, are to be electronic invoices to the European standard. Store country, VAT ID and tax treatment per invoice from day one, and confirm the specifics with an accountant.

Card, wallet and eps-Überweisung payments in Austria

The Oesterreichische Nationalbank's 2025 payment methods study, published on 29 April 2026, found that 67% of respondents shop online, about 50% at least once a month, and that cards (35%) and wallets (30%) are the most-used online payment methods. eps-Überweisung, powered by PSA, lets people pay through their own bank's online banking without an extra account or app, sends the merchant a real-time payment confirmation, and is widely used for e-government payments. Card and wallet checkout also has to handle strong customer authentication: the PSD2 standards let payment service providers skip it for a remote payment of no more than EUR 30, but only while the payer stays within a cumulative EUR 100 or five consecutive transactions since the last authentication. We treat the payment provider's events as the source of truth and write idempotent webhook handlers, so a redelivered event is not processed twice. Payment paths always get senior engineer review.

Tenant isolation, entitlements and EU Data Act switching duties

Tenant separation belongs in the data model from the first migration, because retrofitting it means reviewing nearly every query. Engineers design it, along with roles and the mapping from plan to entitlement, and agents generate the screens, admin tools and tests that exercise it. The EU Data Act (Regulation (EU) 2023/2854) has applied since 12 September 2025, and its recitals place SaaS among data processing services. Switching terms must sit in a written contract, with a notice period of no more than two months and a transitional period of no more than 30 calendar days. Until 12 January 2027 providers may charge only reduced switching charges, capped at the costs directly linked to the switch, and from that date none at all. A service mostly custom-built for one customer and not offered at broad commercial scale is exempt from some of these duties, but the customer must be told which before the contract is concluded.

Private companies can integrate ID Austria, the state digital ID with about 6 million activations, 500+ services and 130+ private service providers. It supports secure authentication, eIDAS-compliant qualified electronic signatures and verified register attributes, which suits B2B products that sign agreements or need verified attributes at onboarding. Providers register through the ID Austria Service Provider Registration (IDA-SPR) on the USP. If the product includes an assistant, the AI Act's Article 50 transparency duties have applied since 2 August 2026, so people interacting with an AI system must be told so unless it is obvious. We have shipped subscription products before, including PicKey (pickey.ai), a visual password manager with subscription billing on Stripe for a client in India, and Reveal Software (reveal.software), personal video onboarding for SaaS products built on Hono and Drizzle ORM for a client in Romania.

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Questions

The things people ask before starting.

What VAT rate applies to a SaaS subscription sold to consumers in Austria?

The standard rate of 20 percent; the reduced rates in § 10 UStG cover listed exceptions such as selected foods. Electronic services sold to consumers are taxed in the customer's country, so above the EUR 10,000 threshold a seller elsewhere in the EU charges Austrian VAT and can declare it through the One Stop Shop.

Should a SaaS selling into Austria offer eps-Überweisung at checkout?

It is worth considering for consumer plans. Cards and wallets are the most-used online methods in the Nationalbank's study, but eps-Überweisung is offered by more than 11,000 online shops, lets customers pay through their own online banking without an extra account or app, and gives the merchant a real-time confirmation.

Do B2B SaaS invoices in Austria have to be electronic?

Not as a national rule today. Sovos reports no Austrian B2B e-invoicing mandate and no announced rollout date, and e-invoices may be issued voluntarily if the buyer agrees in advance and their integrity and authenticity are assured, for example with an electronic signature. From 1 July 2030, invoices for intra-EU supplies between businesses must follow the European e-invoicing standard, so structure invoice data now.

How much does it cost to build a SaaS MVP for the Austrian market?

Work runs as AI-accelerated development, starting from $2,000 per month, with scope agreed in writing. Both figures are published starting points in US dollars, not quotes, and the plan and estimate come out of the discovery phase.

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Ankara / Türkiye · Working across European and US time zones

SaaS Development for Austria: Billing, VAT and Tenants

VAT and invoicing for a SaaS product sold in Austria

Card, wallet and eps-Überweisung payments in Austria

Tenant isolation, entitlements and EU Data Act switching duties