What to know about e-invoicing in Hungary

What matters for you as a freelancer

• ✓Agency OS already produces a compliant invoice for this country today — no extra setup needed on your side.
• ✓If your client asks for an e-invoice, you can send one immediately.
• ✓Keep an eye on the mandate date above — it determines when e-invoicing becomes mandatory rather than optional for domestic B2B.

What you don't need to worry about

• –You don't need to change your invoicing workflow ahead of the mandate — Agency OS already outputs the required format.
• –Cross-border invoices to clients in other countries aren't affected by this country's domestic mandate.

What must be on a valid B2B invoice

We haven't confirmed Hungary's exact mandatory invoice fields against an official government source yet, so we don't want to guess and get it wrong. Across the EU, invoices typically need to show your VAT/tax ID, a sequential invoice number, the invoice date, a description of the goods or services, and the applicable VAT rate and amount — but check the specifics with a local tax advisor before relying on this for Hungary.