Free GST Invoice Software for Freelancers in India (2025 Guide)

Most freelancers in India start out invoicing with a plain Word document or a WhatsApp message with an amount in it. That's fine — until a client's accounts team asks for a "proper GST invoice" and you realise you're not entirely sure what that means, or worse, whether you're even supposed to be charging GST at all.

This guide covers both: when GST registration actually kicks in for a freelancer, and what a compliant invoice needs once it does — without the accountant-speak.

Do you even need to register for GST?

As a freelancer providing services, you generally need to register for GST once your aggregate turnover crosses ₹20 lakh in a financial year (₹10 lakh in a few special category states). Below that threshold, you're not required to register or charge GST at all — and plenty of freelancers stay unregistered for years while under it.

Two situations pull that threshold forward, though, regardless of your revenue:

You're supplying services inter-state (your client's GSTIN is registered in a different state from you) — this generally requires GST registration regardless of turnover, for most categories of supply.
A client specifically requires a GST invoice to process your payment through their vendor system — common with larger companies and agencies, even if you're technically under the threshold.

If either applies to you, or you're getting close to ₹20 lakh, it's worth registering proactively rather than scrambling once a client asks.

What a compliant freelance invoice actually needs

Once you're GST-registered, every invoice you issue needs, at minimum:

Your name, address, and GSTIN
A consecutive, gap-free invoice number, unique for the financial year (see our Rule 46(b) guide for the exact requirement)
Invoice date
Client's name, address, and GSTIN (if they're registered)
Description of the service, and its SAC code (Services Accounting Code — the services equivalent of an HSN code)
Taxable value, GST rate, and the tax amount split into CGST+SGST or IGST depending on place of supply (see our CGST/SGST/IGST guide)
Total invoice value, in figures and ideally in words too

Most freelance services fall under an 18% GST rate, but it's worth confirming the SAC code and rate for your specific category rather than assuming.

The mistake that trips up freelancers specifically

Because a lot of freelance work is remote, it's easy to invoice a client without ever thinking about where they're registered. But the CGST+SGST vs. IGST decision depends entirely on that — a Bangalore-based client billed by a Bangalore-based freelancer gets CGST+SGST; the exact same client billed by a Pune-based freelancer gets IGST. It has nothing to do with where the work was actually done, and everything to do with the two GSTINs involved. Get it wrong and the client may not be able to claim the input credit, which becomes your problem the moment they notice.

Why "free" actually matters here, specifically

Freelance income is lumpy — some months are three invoices, some are zero. A ₹500–1,500/month invoicing subscription is a real, recurring cost against income that isn't recurring, and it's one of the first things that gets deprioritized when a slow month hits, which is exactly when you can least afford to send a sloppy, non-compliant invoice to a client who's already hesitant to pay on time.

This is the specific gap Settle is built for at this stage: unlimited invoices, the correct tax split and numbering handled automatically, at zero cost while it's in early access — so invoicing quality doesn't depend on how many invoices you happened to send that month.

A quick freelancer checklist

Check your rolling 12-month turnover against the ₹20 lakh threshold (₹10 lakh in special category states).
If you're inter-state or a client requires it, register for GST even under the threshold.
Get your GSTIN onto every invoice template you use — no exceptions, including quick one-off invoices.
Confirm the SAC code and GST rate for your specific service category once, and reuse it.
Let software decide CGST/SGST vs IGST from the client's actual GSTIN state — don't rely on memory.