AI API with a GST invoice (₹)

GST invoices for AI spend — ITC claimable

Every unoblox user gets a monthly GST invoice itemizing models, tokens, and ₹ amounts. If your business is GST-registered, AI API costs qualify as input-tax credit (ITC) — reducing your net tax liability. No other AI gateway in India offers this.

How GST invoices work

Example: You spend ₹10,000 on GPT-4o, Qwen, and embeddings in September.

Invoice date:    30 September 2026
GSTIN:           unoblox (27XXXXXX…)
Your GSTIN:      Yours (24XXXXXX…)

Line items:
  GPT-4o          ₹6,000
  Qwen3-235B      ₹3,000
  Embeddings (₹0) ₹0
  ―――――――――――――
  Subtotal:       ₹9,000
  + CGST (9%):    ₹810
  + SGST (9%):    ₹810
  ―――――――――――――
  Total:          ₹10,620

On your own GST return, claim ₹1,620 as ITC (input tax).

GST invoice rules

Rule	Details
Invoice date	Last day of each month (auto-issued)
GSTIN	unoblox's Pan-India registration
Your GSTIN	Required on signup; update anytime
HSN/SAC code	Shown on every invoice (IT-enabled services)
Tax rate	18% (9% CGST + 9% SGST, or 9% IGST if out-of-state)
ITC claim window	Per current GST filing rules — confirm your exact deadline with your CA
Export	PDF, CSV, JSON from Invoices tab

3-step setup

1. Sign up at unoblox.ai. Email + password (no card).
2. Add your GSTIN: Settings → Billing → GST details. Paste your 15-digit GSTIN.
3. Top-up ₹ balance. Razorpay or NEFT. Monthly invoice auto-generates.

ITC eligibility checklist

• Your business is GST-registered (consult your accountant).
• AI spend is for business (not personal hobby).
• You file GST returns regularly (GSTR-1, GSTR-3B).
• Invoice is in your GSTIN's name.
• You claim ITC within the window your own GST filings require (confirm with your CA).
• HSN 998311 is on your ITC reconciliation list.

Frequently asked questions

Q: Will ITC actually reduce my tax? Yes. ITC = input tax paid. If you owe ₹100K tax and claim ₹10K ITC, you owe ₹90K. (Consult your CA for your specifics.)

Q: What if I'm not GST-registered? You still get invoices for bookkeeping. ITC benefit only applies to registered businesses.

Q: Can I backdate invoices? No. Invoices are issued on the last day of each month for that month's spend.

Q: Do unoblox's own models (Embedding, Reranker) count? Yes. They're ₹0 but still itemized on the invoice for compliance.

Q: What if my monthly spend is <₹20? Minor invoices still issue. Some GST software auto-filters small amounts.

Get started in rupees → https://unoblox.ai/sign-in