Invoice branding: logo and letterhead

What branding can and cannot change

The law lists what an invoice must contain; it says nothing about colours, fonts or logos. Branding may change how the page looks. It must not hide, shrink or drop required details such as your GSTIN, invoice number, place of supply or tax amounts. See GST invoice mandatory fields.

One legal point: show your name as registered under GST. If you trade under a brand name that differs from the legal name, print both, for example Rangoli Home (Legal name: Sharma Furnishings Pvt. Ltd.), so the buyer's books and GST data match. This is general information, not legal or tax advice.

Branding is not vanity. A buyer's accountant handling hundreds of supplier bills a month finds a clean, consistent invoice faster, books it correctly and raises fewer queries. A shabby or inconsistent document, on the other hand, invites doubt: is this really from them, and are these the right bank details? In a time of payment frauds using fake invoices, a recognisable, consistent look is part of your security as well.

Anatomy of a good letterhead

Keep this skeleton identical across quotation, proforma, purchase order, challan and invoice. Buyers learn where to look, and your accountant does too.

Design rules that keep it readable

• One brand colour for headings and lines; black text for numbers. Coloured amounts photocopy badly.
• Fonts: one clean typeface, minimum 9 pt for the item table and 10 pt for totals.
• Logo file: a high-resolution PNG with transparent background, so it prints sharp and does not show a white box on coloured headers.
• White space: leave margins of at least 1 cm; printers cut edges.
• Test in grayscale: many buyers print in black and white. If the GSTIN disappears on a light-blue band, change the band.
• Test on a phone: most PDFs are now read on WhatsApp. Totals should be legible without zooming.

Pre-printed stationery vs digital letterhead

A practical example: a business printing 5,000 letterhead sheets at about ₹3 each spends ₹15,000, and a new branch address makes the leftover stock useless. A digital letterhead avoids that, though some trades still like a printed copy for counter sales.

Small additions that help you get paid

• Bank account name, number, IFSC and branch, plus a business UPI ID or QR. See UPI QR code on invoices.
• Due date printed as a date near the total.
• Your Udyam number, if you are a micro or small enterprise.
• A named contact for billing queries with a phone number.
• A one-line thank-you; it costs nothing.

Consistency checklist

1. Same logo file, colours and fonts on every document.
2. Legal name and GSTIN on every page of multi-page documents.
3. Document title in the same place each time.
4. One signature block style.
5. Old letterheads with outdated addresses destroyed or archived.
6. Templates locked so staff cannot change bank details.

Signature and stamp

The signature block should show For [Business name], the signature, and Authorised Signatory. A rubber stamp is customary but not required. If you place a signature image on PDFs, protect the template so it cannot be misused. Read digital signature on invoices for stronger options.

Doing this with Tally and Cashflow OS

Cashflow OS documents (quotation, proforma invoice, purchase order and delivery challan) use your business's logo, colours, letterhead, signature, and bank and UPI details, set once and applied to every document. They are shared as PDFs on WhatsApp or email. Tax invoices print from TallyPrime using its own print settings, so keep the two looking similar. See quotations.