Is this invoice legally valid?

A simple invoice works fine for non-GST businesses. If GST-registered, use the GST Invoice Generator, which includes GSTIN, HSN, and tax breakup.

How should I number invoices?

Keep it sequential (INV-001, INV-002…) and you can include the financial year too (2026-27/001). Every invoice number should be unique.

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Invoice Details

Your Business Name

Client Name

Invoice No.

Date

Items

Tax % (optional)

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