Translator and Interpreter Invoice Template

When to Use This Template

This template is designed for freelance translators and interpreters who need to invoice clients for language services. Translation and interpretation have their own billing conventions that differ from general freelance work, primarily because the unit of measurement (words, pages, hours) is specific to the type of service and the industry norms in your market.

For written translation, the standard billing unit is the per-word rate, with the rate varying based on the language pair, subject matter, and turnaround time. A medical translation from Japanese to English commands a higher rate than a general business translation between closely related European languages. Your invoice should clearly state the language pair, the word count, the per-word rate, and any surcharges for rush delivery, specialized terminology, or additional services like proofreading and DTP (desktop publishing).

For interpretation, billing is typically by the hour or by the half-day and full-day. Conference interpretation, legal interpretation, and medical interpretation each have their own rate ranges. Your invoice should show the date, duration, type of interpretation (simultaneous, consecutive, or whispered), and the languages. Travel time and expenses are often billed separately. If you work through an agency, your invoice goes to the agency, not the end client, and agency rates and payment terms differ from direct client work.

Key Fields to Include

• Your name and business name
• Tax ID or VAT number
• Client’s name and address (or agency name)
• Invoice number and date
• Project reference or PO number
• Language pair (source language to target language)
• Service type (translation, proofreading, interpretation, transcription)
• Word count (source or target, as agreed) or hours of interpretation
• Rate per word or per hour
• Surcharges: rush delivery, certification, notarization, specialized subject
• Subtotal, applicable tax, and total
• Currency of billing
• Payment terms and bank details

Tips

• Always confirm the word count method (source vs. target) before starting work. A 10,000-word English source text can easily become 12,000 words in German or 8,000 words in Chinese, significantly affecting your earnings.
• For rush jobs, apply a clearly stated surcharge (typically 25-50% for next-day delivery, higher for same-day). Show this as a separate line item so the client understands the premium.
• If you use CAT (computer-assisted translation) tools, some clients expect discounts for fuzzy matches and repetitions from translation memory. Agree on the discount grid in advance and show the weighted word count on your invoice.
• For interpretation work, include preparation time as a billable item if it is significant (e.g., reviewing technical materials before a conference). Specify this in your contract.
• Keep a record of the source document with each invoice for your files. If there is a dispute about word count or scope, having the original document is essential.