Official evidence

Sources & verification

This high-stakes calculator links the authority sources, method notes, test cases, and limitations used to check the numbers shown on this page.

Last verified 2026-01-01

Angola - high risk - AfroTools source audit

Official source links

Law, regulation, or version

Last verified: 2026 · Source: AGT (agt

Calculation methodology

The calculator splits the entered amount into net amount, VAT, and VAT-inclusive total using the displayed standard or custom VAT rate. Zero-rated and exempt categories are treated as decision guidance and must be confirmed against the linked authority material before filing.

Known limitations

Informational estimate only. It is not professional tax, legal, payroll, or filing advice.
Product classification, exemption, and zero-rating rules can require invoice-level review.
Sector-specific, regional, treaty, relief, and special-regime rules may not be fully modeled.
Confirm filing, registration, and remittance duties with the official authority or a qualified adviser before submission.

Test-case examples

Input: Net amount: 1,000 at the displayed standard VAT rate.
Expected: VAT equals 1,000 multiplied by the displayed rate; total equals net amount plus VAT.
Why: Confirms the core VAT-exclusive calculation path and makes the rate dependency auditable.

Input: VAT-inclusive amount with the displayed standard VAT rate.
Expected: Net amount equals total divided by 1 plus the rate; VAT equals total minus net amount.
Why: Confirms reverse VAT handling for invoices that already include tax.

Change history

2026-05-02: Trust and verification panel added with source links, methodology, limitations, and report-error CTA.

AfroTools calculators are decision-support tools. Always confirm filing, registration, and remittance duties with the linked authority or a qualified local adviser.

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Calculateur TVA Angola 2026