GST e-invoicing for hotels: what actually changes at checkout

If you've heard the term "e-invoicing" and assumed it's just another name for the GST invoice you already generate at checkout, it's worth being precise about what actually changes - because the two are genuinely different things, and only one of them is optional depending on your turnover.

A GST invoice and an e-invoice aren't the same document

Every hotel charging GST already issues a GST-compliant invoice - one with the correct tax split, your GSTIN, and the guest's billing details. E-invoicing is a separate, government-run step on top of that: the invoice details are reported in real time to the government's Invoice Registration Portal (IRP), typically through a GST Suvidha Provider (GSP), which returns an Invoice Reference Number (IRN) and a signed QR code. Only once that round trip completes is the invoice considered a valid e-invoice - the QR code and IRN are what actually need to appear on the document a guest receives.

This isn't a formality your accountant handles once a year. It happens per invoice, in real time, which means it has to be built into the checkout flow itself rather than bolted on as a monthly export.

Why it's CGST + SGST, not IGST, for most hotel bills

For accommodation and most in-house services, the place of supply is the hotel's own location - not the guest's home state. In practice that means most hotel invoices split the tax as CGST (central) and SGST (state), even when the guest's billing address is in a different state. This is a common point of confusion for hotels new to GST invoicing, and it's worth getting right, since an invoice with the wrong split is a real compliance error, not just a cosmetic one.

Does e-invoicing apply to you yet?

E-invoicing is mandatory once a business crosses a turnover threshold set by the government - and that threshold has been lowered several times over the past few years, bringing more businesses into scope each time it drops. Because the number itself changes, we're deliberately not quoting a figure here that could be stale by the time you read this. The reliable way to know where you stand is to ask your CA directly, or check the current threshold on the government e-invoice portal itself - guessing wrong in either direction has real consequences, either a compliance gap or unnecessary process overhead.

What this looks like in practice

Once e-invoicing applies to a property, the practical requirement is that the invoice, the IRN, and the QR code all need to exist together, generated at the moment of checkout rather than batched later - a guest walking out with an invoice that's missing its IRN is exactly the gap the rule exists to close. Hos91's accounts module generates the GST invoice synchronously at checkout and submits it for e-invoicing in the background, so front desk isn't waiting on a government API mid-checkout, with the IRN and QR code attached automatically once the submission clears - and a clear, retryable status if it doesn't.

None of this is a substitute for advice from your own accountant - tax rules change, and this post describes the mechanism, not your specific filing obligation. If you want to see how the checkout-to-invoice flow actually works end to end, book a walkthrough or start a free trial.