A proforma invoice is a document used to request payment while meeting the tax rules that apply to this type of billing. Getting it right protects both you and your client, keeps the books clean, and avoids disputes over what was agreed.
Every valid proforma invoice should include the following mandatory details: 1. “proforma” clearly stated 2. buyer and seller details 3. description and value of goods 4. expected ship date 5. a reference number. Missing any of these can make the document harder to enforce or, where tax is involved, invalid for VAT purposes.
Tax treatment: A proforma invoice is NOT a tax document. It confirms the price and terms before delivery, often for customs or advance payment. No VAT is charged and no tax is reported. The rate applied here is 0%. When you bill business customers in another country, check whether the reverse-charge or zero-rating rule applies before you finalise the total.
A typical proforma invoice lists concrete line items such as: Custom software build (estimate) (1 x $4800). Always show quantities, unit prices, and the tax amount per line so the grand total is transparent and easy to verify.
Practical tips: 1. Mark it “proforma – not a tax invoice” to avoid confusion. 2. Use it to request a deposit before you start work. 3. Follow up with a real tax invoice on delivery.. Good invoicing habits - consistent numbering, clear payment terms, and prompt delivery - reduce late payments and build trust.
InvoiceFormly helps you produce a correct proforma invoice in minutes. Pick the template, enter your details, add line items, and download a clean PDF or send it by email. Tax math, numbering, and multilingual labels are handled automatically so you can focus on the work.