hr.invalid_vat_rate

HTTP 400   type: validation_error   param: vat.0.rate

{
  "error": {
    "type": "validation_error",
    "code": "hr.invalid_vat_rate",
    "message": "VAT rate \"22.00\" is not permitted. Croatian VAT rates are 0.00, 5.00, 13.00 and 25.00 (restrictive error 182).",
    "param": "vat.0.rate",
    "upstream": null,
    "doc_url": "https://docs.fiskhub.com/errors/hr.invalid_vat_rate"
  }
}

param identifies which line failed, indexed from zero.

What happened

A VAT rate in the vat array is not one of the permitted Croatian rates. Restrictive error 182 limits them to:

Rate
"0.00"	Zero-rated
"5.00"	Reduced
"13.00"	Reduced
"25.00"	Standard

FiskHub checks this locally, before sending.

Should you retry?

Not unchanged. The set is fixed by law.

The fix

Send one of the four rates, as a decimal string with exactly two places.

{
  "vat": [
    { "rate": "25.00", "base": "3.60", "amount": "0.90" },
    { "rate": "5.00",  "base": "4.57", "amount": "0.23" }
  ]
}

Common causes:

Sent	Problem
25	A JSON number. Send "25.00".
"25"	No decimals. Send "25.00".
"25.0"	One decimal. Send "25.00".
0.25	A fraction rather than a percentage. Send "25.00".
"22.00"	Not a Croatian rate — probably another country’s standard rate.
"10.00"	Not a Croatian rate. The reduced rates are 5 and 13.

One entry per rate. A sale spanning two rates has two entries, each with its own base and amount.

For a company that is not VAT-registered, send an empty array — or omit vat entirely, since it defaults to [].

Rates change; the check does not

The permitted set comes from the specification, which has changed four times in fourteen months. If a rate you believe is current is being refused, check the current country schema and then tell us — a rate the regulation permits and we refuse is our bug.

Do not hard-code the rates in a way that requires a device firmware update to change. Rates are configuration.

Consumption tax is a different field

consumption_tax (porez na potrošnju) has its own range, 0.00–3.00, and its own error: hr.invalid_pnp_rate. Do not put it in vat.