Document format and locale facts for Tonga

Why these defaults?

The country code comes from ISO 3166. Unicode CLDR supplies presentation-oriented locale, currency, paper, date, language, calendar, numbering, and direction metadata. Defaults reduce setup time; they do not decide what a valid document must contain.

Recorded official or regional-official language tags: to, en.

Selected national claims reviewed

Document vocabulary and checks

Tonga's consumption-tax invoice particulars, registered-supply context, five-year minimum and longer electronic-record guidance are reviewed. Return filing, registration, rates, exemptions and transaction-specific consumption-tax treatment remain external checks.

Evidence snapshot: 3 official sources · last reviewed 2026-07-19. This is scoped guidance, not a jurisdiction-wide compliance certification.

Tax labels: Consumption Tax. Business identifier labels: TIN.

• Required when applicable: A Tonga consumption-tax invoice shows the regulated title, supplier name/address/TIN, customer name/address/TIN, serial number/date, description/quantity, price and consumption tax.Evidence TO_REVENUE_CT_OBLIGATIONS · reviewed 2026-07-19 · review by 2027-01-19 · automation advisory only
• Required when applicable: Keep consumption-tax records in Tonga in English or Tongan for at least five years. The Ministry's electronic-record guidance states seven years, so seven is the safer product recommendation without mislabelling it as the ordinary five-year statutory minimum.Evidence TO_REVENUE_CT_OBLIGATIONS, TO_REVENUE_RECORDS · reviewed 2026-07-19 · review by 2027-01-19 · automation advisory only
• Guidance: The reviewed Ministry material governs registered-to-registered tax invoices and records. This browser-local PDF is not an authority-filed return or validated fiscal artifact.Evidence TO_REVENUE_TAXABLE_SUPPLIES, TO_REVENUE_RECORDS · reviewed 2026-07-19 · review by 2027-01-19 · automation advisory only

Identifier format guidance: See the relevant authority.