If you're a freelancer in India — designer, developer, writer, consultant, video editor, marketer — and a client just asked for a "GST bill," you're in the right place. This guide covers exactly what a GST invoice for freelancers must contain in 2026, the latest rules after the April 2026 changes, free format you can copy, and the fastest way to issue one (60 seconds, no card, no software install). By the end, you'll know:

Whether you even need to issue a GST invoice (turnover threshold rules) The 16 mandatory fields the law actually demands Free GST invoice format for freelancers — copy-ready How CGST/SGST vs IGST works when your client is in another state What SAC code to use (and where to find yours) How to handle clients without GSTIN (most freelancers' biggest confusion) The fastest free way to generate one online

Let's get into it.

Do freelancers in India need to issue a GST invoice? Short answer: only if you are registered under GST. And you only need to register under GST if either of these is true:

Your annual turnover crosses ₹20 lakh (₹10 lakh if you're in a special-category state like Manipur, Mizoram, Nagaland, Tripura). You supply services to a client in another state — interstate service supply triggers compulsory GST registration regardless of turnover, with one notable carve-out (see below).

If you're below the threshold and serving only clients in your own state, you can issue a simple bill or invoice without GST — but you cannot collect GST or use the words "Tax Invoice" on it.

Note on interstate services: Since 2017 the government has clarified that small service providers below ₹20 lakh turnover doing interstate B2C services are exempt from mandatory registration. But the moment you bill a B2B client in another state, registration kicks in. When in doubt, register — the compliance burden is small and it makes you look professional to corporate clients.

If you are registered, you must issue a GST-compliant tax invoice for every supply of service. Skipping it can attract a penalty of ₹10,000 or 100% of the tax due, whichever is higher.

What is a GST invoice for a freelancer? A GST invoice (formally called a "tax invoice") is a legal document that records a sale of services and the GST charged on it. For freelancers, this is the single most important document in your business — it is:

Proof of supply for your records and your client's records The basis of your client's Input Tax Credit (ITC) — get the format wrong and they lose their ITC, which makes you look unprofessional and may cost you the project The source document for your GSTR-1 return every month or quarter Audit evidence for the next 6 years (the retention period under GST law)

The format is governed by Rule 46 of the CGST Rules, 2017. Miss a mandatory field and the invoice is technically invalid.

Mandatory fields in a freelancer GST invoice (Rule 46 checklist) Every GST invoice you issue must contain these fields. Use this as a copy-paste checklist:

Your name, address, and GSTIN (15-digit number) Invoice number — unique, sequential, max 16 characters, with letters, numbers, hyphens or slashes only Invoice date Client's name and address Client's GSTIN — only if they are registered (B2B). For B2C clients, you write "Unregistered" or leave it blank Place of supply — the state where the service is deemed supplied (usually the client's state for B2B) HSN code (for goods) or SAC code (for services) — for freelancers, this is always SAC Description of service — clear, plain English: "UI/UX design for SaaS dashboard, May 2026" not "design work" Quantity / unit — for services, usually "1" or hours Rate per unit Total taxable value GST rate — typically 18% for most freelance services GST amount split — CGST + SGST for same-state clients, IGST for other-state clients Grand total — taxable value + GST Amount in words (Indian format — Rupees, lakhs, crores) Signature of supplier or authorised representative (digital signature is fine)

Optional but strongly recommended: your UPI ID / QR code and bank details for payment, and a payment due date.

Free GST invoice format for freelancers (copy-ready) Here is a clean, GST-compliant format you can adapt. Replace the bracketed parts with your details: TAX INVOICE ──────────── [Your Name / Studio Name] Invoice No: FREE/2026-27/0001 [Your Address Line 1] Invoice Date: 15 May 2026 [Your Address Line 2] Place of Supply: Karnataka (29) GSTIN: [29ABCDE1234F1Z5] Due Date: 30 May 2026 Email: [you@studio.com] | Phone: [+91 ...]

Bill To: [Client Company Pvt Ltd] [Client Address] [Client City, State, PIN] GSTIN: [29XXXXX1234X1Z5] (or "Unregistered" if B2C)

────────────────────────────────────────────────────────────────────────────────

Description SAC Qty Rate Amount (₹)

──────────────────────────────────────────────────────────────────────────────── 1 Brand identity design — logo, type system 998391 1 50,000 50,000.00 and brand guidelines (May 2026) 2 Website UI design — 8 screens, responsive 998314 1 30,000 30,000.00 ──────────────────────────────────────────────────────────────────────────────── Taxable value: 80,000.00 CGST @ 9%: 7,200.00 SGST @ 9%: 7,200.00 ───────────────────────────────── Grand Total: 94,400.00 ─────────────────────────────────

Amount in words: Rupees Ninety-Four Thousand Four Hundred Only.

Payment details: UPI: [yourname@upi] | A/c: [XXXX1234] | IFSC: [HDFC0001234]

Declarations:

• Whether tax is payable under reverse charge: No
• This is a computer-generated invoice and does not require a physical signature.

For [Your Name / Studio Name] Authorised Signatory If the client is in a different state from you, replace the CGST + SGST lines with a single IGST @ 18% line of the same total amount. We'll cover that next.

CGST + SGST or IGST? The freelancer rule that trips everyone up This is the single biggest source of invoice errors. The rule is simple once you internalise it:

You and the client in the same state → CGST + SGST (split 9% + 9% on a 18% slab) You and the client in different states → IGST (18% in a single line)

That's it. The "place of supply" rule for services is normally the location of the registered recipient. So if you're in Bengaluru and your client is in Mumbai, the place of supply is Maharashtra → IGST. If the same client has a Bengaluru branch and the contract is with that branch (with a Karnataka GSTIN), it becomes intra-state → CGST + SGST. Worked example. You charge ₹1,00,000 for a website project at 18% GST:

Same-state client (you in Karnataka, client in Karnataka): CGST ₹9,000 + SGST ₹9,000 = ₹18,000 GST → invoice total ₹1,18,000 Other-state client (you in Karnataka, client in Maharashtra): IGST ₹18,000 → invoice total ₹1,18,000

The total GST is the same. Only the split changes — and getting the split right matters because CGST and SGST are paid to different governments.

What SAC code do I use as a freelancer? SAC (Services Accounting Code) is the 6-digit code that classifies your service for GST. You must mention it on every invoice. For freelancers, you'll almost always be using one of these: ServiceSAC CodeGST RateSoftware development, coding, web development99831318%Website / UI design, graphic design998314 / 99839118%Content writing, copywriting, translation998599 / 99979918%Digital marketing, SEO, social media99836318%Photography, videography99838618%Management consulting, business consulting99831118%Architecture, interior design99832118%Legal consulting99821318%Online tutoring, training (non-recognised)99929318%Accounting, bookkeeping99822218% If you provide multiple services, use a different SAC line for each. The official lookup tool is on the GST portal — search "HSN SAC search" on services.gst.gov.in. Threshold note: if your turnover in the previous financial year was up to ₹5 crore, you can use a 4-digit SAC for B2C invoices and 6-digit for B2B. Above ₹5 crore, 6-digit on every invoice.

What if my client doesn't have a GSTIN? Very common for freelancers serving individuals, foreign clients, or unregistered small businesses. The rule:

Client is registered (B2B): Mention their GSTIN on the invoice. They can claim Input Tax Credit. Client is unregistered (B2C): No GSTIN to mention. Still issue a tax invoice. Above ₹50,000 you must also mention the client's name and full address. Client is overseas (export of service): This is a "zero-rated supply." You can either pay IGST and claim refund, or issue under a Letter of Undertaking (LUT) and not charge GST at all. Most freelancers go the LUT route — it's a one-time annual filing on the GST portal and you bill in USD/EUR with no GST. However: export rules have specific conditions (payment must come in foreign convertible currency, the recipient must be outside India, and the place of supply must be outside India). Worth a quick chat with a CA before your first export invoice.

What changed in 2026? (GST 2.0 + April rules) Three changes hit freelancers in 2026:

New invoice numbering series from 1 April 2026. Every GST-registered taxpayer must start a fresh, unique invoice series at the start of each financial year. So your 2025-26 series ends 31 March 2026, and 1 April you start FREE/2026-27/0001. This isn't new in spirit — Rule 46(b) always required FY-wise unique numbering — but enforcement and audit scrutiny have tightened. E-invoicing threshold dropped to ₹5 crore aggregate turnover. If your aggregate annual turnover (across all GSTINs on your PAN) crosses ₹5 crore, you must generate every B2B invoice through the government's Invoice Registration Portal (IRP), which returns an IRN and QR code. Most freelancers are nowhere near this, but if you're a high-billing consultant or run a small studio, check this carefully. 30-day reporting window. From April 2026, invoices for businesses above the e-invoicing threshold must be reported on the IRP within 30 days of issue. Miss the window and the invoice is invalid for ITC purposes — the client loses their credit, you get a call.

If you're a sub-₹5-crore freelancer, points 2 and 3 don't apply to you yet. Point 1 applies to every registered freelancer.

The fastest free way to make a GST invoice for freelancers Manual formats in Word or Excel get the job done once or twice. After invoice #10, you'll start making mistakes: wrong CGST/SGST split, broken numbering after FY-end, typos in amount-in-words, GSTIN copy-paste errors. Each of these can cost your client their ITC. A free GST invoice generator built for India fixes all of this in one step:

Auto-detects CGST/SGST vs IGST from your state and client's state Pre-loads HSN/SAC codes so you pick from a list instead of Googling each one Auto-resets your numbering on 1 April every FY Indian-format amount in words — "Rupees One Lakh Twenty-Five Thousand Only" WhatsApp share with PDF attached, in one tap UPI QR on every invoice so clients pay faster GSTR-1 export when it's time to file

Apna Invoice does exactly this — free during beta, no card needed, unlimited invoices and customers. Sign up takes 30 seconds, your first invoice 60 seconds after that. It's built for Indian freelancers, MSMEs, shopkeepers and CAs specifically, with all 36 states and UTs pre-loaded and DPDP-compliant India data residency. If you'd rather just calculate the GST on a quote before sending it, the free GST calculator on the homepage gives you the inclusive/exclusive split instantly — no signup.

Common freelancer invoice mistakes (and how to avoid them) After looking at thousands of freelancer invoices, these are the most expensive mistakes:

Mixing CGST/SGST with IGST in one invoice. It's one or the other, never both. The system you use should decide automatically. Reusing invoice numbers across financial years. INV-001 in May 2025 and INV-001 in May 2026 is a Rule 46 violation. Use INV/2025-26/001 and INV/2026-27/001. Forgetting "amount in words" or writing it in English thousands instead of Indian lakhs. "Rupees One Hundred Thousand" is wrong — it should be "Rupees One Lakh Only." Wrong SAC code. A web developer using a consulting SAC, or vice versa, raises flags during GSTR matching at the client's end. No invoice for advances received. If a client pays you ₹50,000 advance against a ₹2,00,000 project, you owe an advance receipt voucher with GST on it — not just a regular invoice when the work is done. Editing or deleting an issued invoice. Once issued, a GST invoice is immutable. If you need to change it, issue a credit note referencing the original — and do it within the Section 34 window (30 November of the following FY).

Frequently asked questions Can a freelancer issue an invoice without GST? Yes, if you are not registered under GST (turnover below ₹20 lakh and only intra-state services). Issue a simple bill — do not write "Tax Invoice," do not mention GSTIN, do not charge GST. What is the GST rate for freelancers in India? Almost all freelance services fall under the 18% slab. A few specialised categories (some training services, certain artistic services) may differ — but if you're a designer, developer, writer, consultant or marketer, assume 18% unless your CA says otherwise. Do I need to file GSTR-1 every month as a freelancer? If your aggregate turnover is up to ₹5 crore, you can opt for the QRMP scheme — file GSTR-1 quarterly and pay tax monthly via PMT-06. Above ₹5 crore, monthly GSTR-1 is mandatory. Can I issue a handwritten GST invoice? Technically yes, as long as all mandatory fields are present and it's legible. Practically no — handwritten invoices look unprofessional, are error-prone, and you can't share them on WhatsApp. Use a free generator. How long must I keep freelancer GST invoices? Six years from the due date of the annual return for that financial year. Keep digital copies — a one-click ZIP backup is enough. What is the difference between a bill and a tax invoice for freelancers? A "tax invoice" is the document a GST-registered freelancer issues — it must say "Tax Invoice" at the top and contain all Rule 46 fields. A "bill" is what an unregistered freelancer issues — same information minus GSTIN and GST charges. Composition dealers (rare for service freelancers) issue a "Bill of Supply" under Rule 49. Can I bill foreign clients in USD without GST? Yes — file a one-time annual Letter of Undertaking (LUT) on the GST portal, then issue export invoices in USD/EUR with 0% GST. Conditions: payment in convertible foreign currency, recipient outside India, place of supply outside India.

TL;DR

Register for GST if you bill above ₹20 lakh/year or have B2B clients in other states. Every invoice needs the 16 Rule 46 fields — supplier details, GSTIN, invoice number, date, SAC code, taxable value, GST split, amount in words. Same-state client = CGST + SGST. Other-state client = IGST. Most freelance services are 18% GST under one of the 9989xx SAC codes. From 1 April 2026, start a fresh invoice numbering series for FY 2026-27. Skip Word and Excel — use a free Indian GST invoice generator and stop making the same five mistakes.

Make your first GST invoice in 60 seconds. Sign up free on Apna Invoice → — no card, no setup call, unlimited invoices during beta.

Written by the Apna Invoice team — a free GST invoicing tool built in India for Indian freelancers, MSMEs and CAs by Datasoft Technologies. This article is general guidance, not legal or tax advice. For your specific situation, consult a Chartered Accountant.

Suggested internal links (for the developer adding this post)

Anchor: "free GST calculator" → https://apnainvoice.com/#gst-calculator Anchor: "WhatsApp invoice sharing" → https://apnainvoice.com/#features Anchor: "GST New Rules 2026" → https://apnainvoice.com/blog/gst-new-rules-2026-every-invoice-change-indian-businesses-must-know-updated-april-2026 Anchor: "invoice templates" → https://apnainvoice.com/invoices/templates Anchor: "HSN/SAC finder" → https://services.gst.gov.in/services/searchhsnsac (external, nofollow optional)