VAT Invoice Line Calculator

Build an invoice line by line and see VAT calculated for each row individually. Enter a description, quantity, and unit price for each line — the calculator shows the net total, VAT amount, and gross total per line, plus running subtotals and a grand total at the bottom.

Includes preset VAT rates for South Africa (15%), the UK (20%), EU (19%), Australia (10% GST), India (18% GST), Canada (5% GST), and Japan (10%). You can also enter a custom rate and currency symbol for any jurisdiction.

**How Line-Level VAT Calculation Works**

Each invoice line has three components: the net amount (quantity × unit price), the VAT amount (net amount × VAT rate ÷ 100), and the gross amount (net + VAT). The invoice subtotal is the sum of all net amounts, the total VAT is the sum of all VAT amounts, and the grand total is the sum of all gross amounts (equivalently, subtotal + total VAT).

For example, a South African invoice with three lines: Consulting (R10,000), Design work (R5,000), and Project management (R3,000). The subtotal is R18,000. At 15% VAT, the total VAT is R2,700, and the grand total is R20,700.

**South African Tax Invoice Requirements**

Under the South African VAT Act, a valid tax invoice must contain specific information to be compliant with SARS requirements. This includes the words "tax invoice" in a prominent place, the name, address, and VAT registration number of the supplier, the name and address of the recipient (for invoices over R50,000), the individual quantity, unit price, and VAT charged per line item or the total VAT charged, and the total amount charged including VAT.

For invoices under R3,000, a simplified tax invoice is acceptable, which only needs the name and VAT number of the supplier, a brief description of the goods or services, and the total amount including VAT. This calculator helps you compute the line-level amounts you need for a compliant invoice.

**Real-World Scenarios**

A freelance web developer in Pretoria sends a monthly invoice to a corporate client with five line items: website maintenance (R5,000), content updates (R3,000), bug fixes at hourly rate × 8 hours (R4,800), SEO monitoring (R2,500), and hosting management (R1,200). Subtotal: R16,500. VAT at 15%: R2,475. Grand total: R18,975.

A Johannesburg accounting firm bills a client for three services: annual financial statements (R15,000), tax return preparation (R8,000), and consulting hours × 12 (R6,000). The VAT-inclusive grand total is R33,175.

**Tips for Accurate Invoicing**

Always apply the correct VAT rate for your jurisdiction — using the wrong rate can result in SARS penalties. For mixed-rate invoices where some items are zero-rated and others are standard-rated, this calculator applies a single rate to all lines. You would need to run separate calculations for each rate and combine the totals. Ensure quantities and unit prices are accurate before sending invoices, as errors can delay payment and create accounting headaches. Save your invoice data before closing the tool, as calculations are session-based.

Designed for freelancers preparing quotes, small businesses generating invoice data, accountants checking line-level VAT, and anyone who needs to see tax breakdowns per item rather than just on the total. Copy the full invoice summary with one click.

All calculations are client-side — your invoice data never leaves your browser.