Company Letterhead Format: What to Include (GSTIN, CIN, Address)
A company letterhead should show your logo, the registered business name, full address, phone, email and website, and – where they apply – GSTIN, CIN (for companies) and LLPIN (for LLPs). Keep the header small, use your brand colour once, leave generous margins and put registration details in a slim footer.
What to include
- Logo and business name exactly as registered.
- Registered office address (and branch, if relevant).
- Phone, email and website.
- GSTIN if registered under GST.
- CIN for private/public limited companies; LLPIN for LLPs.
- Optional: QR code to your website or vCard.
Design tips
- Header no taller than about 15% of the page.
- One brand colour, used sparingly.
- Registration numbers in the footer, small but legible.
- A light logo watermark looks premium on certificates and offer letters.
Letters you'll write on it
Quotation cover letters, payment reminders, experience and completion certificates, offer letters, authorisation letters and NOCs.
Letterheads in Invoice24
Choose from 8 designs built from your business profile, start from ready-made letters, add a QR code, stamp and signature, and download a blank letterhead PDF for printing.
Frequently asked questions
Is GSTIN mandatory on a letterhead?
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It isn't legally required on a letterhead, but it is expected on business correspondence and is mandatory on tax invoices.
Is CIN mandatory on a company letterhead?
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Yes. Section 12 of the Companies Act, 2013 requires a company's name, registered office address, CIN, phone, email and website on its letterheads and official documents.
GST invoices, quotations with client approval and branded letterheads – private, offline-ready and free.