LUT Under GST for Exporters: How to Export Without Paying IGST

LUT Under GST for Exporters: How to Export Without Paying IGST

If you run an export business in India — whether you ship physical goods abroad or you're an IT company, a design agency, or a freelancer billing clients in the US, UK, or Europe — there's a good chance someone has told you about "LUT" and you nodded along without fully understanding it. You're not alone. Most founders discover LUT only when their CA asks, "Do you have a valid LUT for this year?" right when an export invoice is due.

Here's the short version: LUT is what lets you raise export invoices without charging or paying IGST on them. Skip it, and you end up paying 18% (or whatever the applicable rate is) out of your own pocket on every export invoice, then waiting weeks or months to get it back as a refund. For a services business running on tight margins, or a goods exporter with working capital already stretched thin, that's money you simply don't want stuck with the government. Let's break down exactly what LUT is, who needs it, and how to get it right — the first time.

What is LUT under GST

LUT stands for Letter of Undertaking. In simple terms, it's a self-declaration you file with the GST department, promising that you will export goods or services (or supply to an SEZ unit/developer) without demanding any tax refund later, and that you will fulfil all conditions required under the law for a zero-rated supply.

Once your LUT is accepted, you can raise export invoices without charging IGST at all. Exports under GST are treated as "zero-rated supplies" — meaning they're not meant to be taxed — but the law still gives you two routes to achieve that zero rating:

• Route 1 — Export under LUT (without payment of IGST): You furnish the LUT, then export freely without charging IGST on your invoices. This is the route most exporters prefer.
• Route 2 — Export with payment of IGST, then claim refund: You pay IGST upfront on the export invoice (out of your own funds or input tax credit) and then file for a refund of that IGST later.

LUT is filed online in Form GST RFD-11 on the GST portal, and it is valid for one financial year only — meaning you need to furnish a fresh LUT every year before you can continue exporting without paying IGST.

For most exporters, especially services companies with monthly overseas billing, LUT is the far simpler and more practical option — which is exactly why it has become the default choice for the vast majority of Indian exporters. If this is your first time filing one, Legal Suvidha's GST team can walk you through the entire RFD-11 filing in a single sitting, so you don't lose billing time figuring out the portal yourself.

Why LUT matters: the real benefits for your business

It's tempting to think of LUT as "just another compliance form." It isn't. Here's why it actually matters to your bottom line:

• Your working capital doesn't get locked up. Without LUT, you'd have to pay IGST on every export invoice first and wait to claim it back. If you're invoicing lakhs (or crores) worth of exports every month, that's a serious chunk of cash sitting with the government instead of funding your payroll, ad spend, or vendor payments.
• No dependency on the refund process. GST refunds are generally processed faster than they used to be, but delays, scrutiny, and documentation mismatches still happen in practice. With LUT, you simply don't create that refund dependency in the first place.
• Simpler month-to-month compliance. You raise your export invoice, mark it as "supply under LUT without payment of IGST," and move on. There's no extra tax calculation, no extra payment, no separate refund application to track every month.
• It's effectively mandatory if you want to do zero-rated supply without paying tax. If you want to export goods/services or supply to an SEZ without charging IGST, LUT (or a bond, discussed below) is the legal requirement — there's no way around it.

For IT services firms and freelancers billing clients in dollars or pounds, this matters even more because your margins are already affected by currency conversion, payment gateway fees, and TDS-equivalent deductions abroad. Blocking additional cash in IGST on top of that is avoidable friction you don't need.

Who needs LUT — and who doesn't qualify

Any registered person who wants to export goods or services, or supply goods/services to a Special Economic Zone (SEZ) unit or developer, without payment of IGST, needs to furnish an LUT. This covers a wide range of businesses:

• Goods exporters — manufacturers and traders shipping physical products overseas
• IT and software services companies billing clients in the US, UK, Europe, Australia, or anywhere outside India
• Freelancers and small agencies (design, content, marketing, development) invoicing foreign clients
• Consulting firms and BPOs serving overseas clients
• Businesses supplying goods or services to SEZ units or SEZ developers within India

Practically speaking, if you have export turnover — even a single overseas invoice — and you don't want to pay IGST on it, you need a valid LUT before you raise that invoice.

Who is not eligible for LUT? The GST law excludes exporters who have been prosecuted for any offence involving tax evasion of an amount exceeding a specified threshold — this is commonly cited as Rs 2.5 crore or more under the CGST Act or an earlier existing law (please verify the current threshold with your GST practitioner or the latest CBIC notification, as thresholds and clauses can be updated). If you fall into this excluded category, you cannot self-declare via LUT.

In that case, you're not locked out of zero-rated export benefits altogether — you simply have to take the alternative route: execute a bond along with a bank guarantee in favour of the department, instead of a simple LUT. This bond route involves more paperwork, a bank guarantee cost, and generally more scrutiny, which is exactly why almost every eligible exporter prefers to qualify for and use LUT instead.

One more basic but important condition: your GSTIN must be active and in good standing — no cancelled or suspended registration — for your LUT application to go through smoothly.

Documents and information required for LUT

Filing LUT is not paperwork-heavy compared to most other GST compliances, but you do need to have the following ready and accurate before you sit down to file:

• GSTIN and registered business details as per your GST registration
• IEC (Import Export Code) details, if applicable to your business — many services exporters also hold an IEC even though it isn't always separately verified during LUT filing
• Details of two independent witnesses — this is a specific and often overlooked requirement. You need the name, address, and occupation of two witnesses who are not related parties to the transaction
• Authorized signatory details — the person who will digitally sign the LUT application (via DSC or EVC)
• Reference of previously furnished LUT, if you had filed one in an earlier financial year (the portal typically lets you upload or refer to the earlier LUT ARN)
• Self-declaration content confirming that you will comply with the conditions of the LUT — that you will export within the prescribed time period, and if you fail to do so, you will pay the applicable IGST along with interest

None of this needs notarization or physical submission in most cases — it's a fully online, self-certified process. But small errors, like a mismatched witness address or an incorrect financial year, can cause your application to bounce back or create complications later. This is precisely the kind of detail Legal Suvidha's team double-checks before submission, so your LUT goes through cleanly on the first attempt.

Step-by-step process to file LUT on the GST portal

Here's how the filing actually works, from start to finish:

1. Log in to the GST portal using your GSTIN credentials at the official GST portal.
2. Navigate to Services > User Services > Furnish Letter of Undertaking (LUT). This is where the RFD-11 form lives.
3. Select the relevant financial year for which you want to furnish the LUT. Remember — this is the single most common point of error, so double-check you're selecting the correct upcoming or current financial year.
4. Upload your previously furnished LUT, if applicable. If you filed one last year, you can typically attach or reference that earlier document.
5. Fill in the self-declaration form, confirming your undertaking to abide by the conditions — export within the specified timeline, pay IGST with interest if you fail to do so, and comply with all applicable GST provisions for zero-rated supply.
6. Enter the details of two independent witnesses, including name, occupation, and address for each.
7. Preview the form carefully before submission — check the financial year, your business details, and witness information one more time.
8. Sign and submit using DSC (Digital Signature Certificate) or EVC (Electronic Verification Code), depending on how your business is structured (companies and LLPs generally need DSC; proprietorships and some other entities can use EVC).
9. Download the acknowledgment, which carries a system-generated ARN (Application Reference Number). This ARN is your proof of filing and is typically generated instantly.

In most cases, there is no separate departmental approval needed — the LUT is deemed accepted once the ARN is generated, and you can start invoicing exports without IGST from that point. Still, it's worth keeping a copy of the acknowledgment and ARN safely, since your bank, buyers, or auditors may ask for it during the year.

If this sounds straightforward on paper but you're worried about getting the financial year, witness details, or DSC signing right, that's exactly the kind of thing Legal Suvidha handles routinely — we file it correctly the first time and send you the ARN and acknowledgment the same day.

Fees, charges & late fees in 2026

Here's some good news: there is generally no government fee charged for filing the LUT itself on the GST portal — it's a free self-declaration process from the department's side. (As with all things GST, verify the current position, since portal processes and any incidental charges can be updated by CBIC from time to time.)

So where does cost come in? Typically, the cost you'll pay is a professional or service fee — for a CA, CS, or GST consultant to prepare the declaration correctly, get the witness details right, ensure the correct financial year is selected, sign it using the appropriate method, and file it without errors. Given how cheap this is relative to the risk of getting it wrong, most experienced exporters simply outsource it rather than risk a bounced or delayed filing during a busy invoicing month.

Now consider the real cost of not having a valid LUT:

• You must pay IGST upfront on every export invoice raised without LUT — for services exporters billing in dollars, this can mean locking up a substantial amount every month
• You then need to file a separate refund claim for that IGST, which involves its own documentation and processing time — typically weeks, sometimes longer if there are discrepancies or additional verification needed
• Alternatively, without LUT you might end up relying on refund of unutilised input tax credit, which again requires a separate application and processing cycle
• Meanwhile, your working capital sits blocked instead of being available for salaries, vendor payments, or reinvestment in growth

For a growing exporter, this isn't a small inconvenience — it's a recurring cash flow drag that compounds every single month you operate without a valid LUT. This is the single biggest reason Legal Suvidha recommends treating LUT renewal as a non-negotiable annual task, ideally handled as part of an ongoing compliance retainer rather than a one-time favour you ask your CA for.

Timeline and due dates you must track

The most important date to remember with LUT is this: it must be furnished before you undertake any zero-rated supply (export or SEZ supply) without payment of IGST in that financial year. You cannot retroactively apply it to invoices already raised without LUT in that period.

Because LUT is valid for one financial year only, this creates an annual renewal cycle that many exporters forget about until it's too late:

• Ideal timing: File your LUT for the new financial year before 1st April, so you're covered from day one of the new year without any gap in your export invoicing.
• If you miss the start of the year: You can still file it mid-year, but any export invoices raised between 1st April and the date of your new LUT technically fall into a grey zone — best practice is to avoid this gap altogether rather than try to fix it after the fact.
• Processing time: Filing is typically instant online, with the ARN generated the same day, and in most cases there's no departmental approval delay — it's deemed accepted upon submission, assuming your GSTIN is active and your declaration is in order.

Because the renewal date is the same every year and easy to forget amid daily business operations, many of Legal Suvidha's export clients keep us on retainer specifically for an annual LUT renewal reminder and filing service — we track the date, prepare the form in advance, and file it before the new financial year begins, so there's zero gap in your ability to invoice without IGST.

LUT vs Bond vs Paying IGST and Claiming Refund: Key Distinctions

It helps to see all three routes side by side, since founders often confuse them:

• LUT (Letter of Undertaking): A simple self-declaration, filed online in Form RFD-11, free of government fee, valid for one financial year, available to most exporters, requires no bank guarantee or security deposit, and lets you export without paying IGST from day one.
• Bond with bank guarantee: Required only for exporters who are not eligible for LUT (for example, those prosecuted for tax evasion above the specified threshold). This route involves a formal bond, typically backed by a bank guarantee, more documentation, and generally more time and cost to set up.
• Paying IGST and claiming refund: No LUT or bond required at all, but you pay IGST on every export invoice upfront and then apply for a refund separately. This route ties up your working capital until the refund is processed and adds an extra compliance step (the refund application itself) for every cycle.

For the overwhelming majority of eligible exporters — goods exporters, IT companies, agencies, freelancers — LUT is simply the most efficient route: no fee, no bank guarantee, no blocked cash, and minimal ongoing compliance beyond the annual renewal.

Common mistakes exporters make with LUT

Even though LUT filing looks simple on the surface, we've seen these mistakes trip up exporters again and again:

• Forgetting annual renewal. LUT is valid for one financial year only. Businesses that filed it once and assumed it carries forward often discover the lapse only when an auditor or a bank flags it — sometimes months into the new year.
• Selecting the wrong financial year on the form. A small dropdown error at the time of filing can mean your LUT technically doesn't cover the period you think it does.
• Incorrect or incomplete witness details. Since two independent witnesses with full name, address, and occupation are mandatory, sloppy or inconsistent details here can create complications later if the application is scrutinised.
• Exporting first and figuring out LUT later. Some businesses raise export invoices without LUT (or without a valid one for that year) and only then realise they should have filed it — leaving them stuck paying IGST and going through the refund process for those invoices.
• Mismatch between invoice declaration and actual LUT/bond status. Your export invoices should correctly reflect that the supply is made under LUT (or under bond, if applicable) — a mismatch between what your invoice says and what's actually on file with the department can cause issues during GST return filing or refund scrutiny.
• Not mentioning the LUT reference on export invoices. Best practice is to print the LUT reference details (such as the ARN) on your export invoices, since buyers, banks, and auditors often ask for this as proof that the supply is validly zero-rated without IGST.
• Treating LUT as a one-person job with no backup. If the person managing your compliance leaves or gets busy right around the renewal window, the LUT can easily be missed — which is exactly why many growing exporters prefer to have a professional firm manage it as a standing responsibility rather than an ad hoc task.

Getting any one of these wrong doesn't just mean paperwork headaches — it can directly translate into IGST you didn't need to pay, refund delays, or awkward conversations with your bank or auditor. Legal Suvidha's LUT filing service is built specifically to catch these errors before submission, and our annual renewal reminders make sure you're never caught off guard at the start of a new financial year.

Frequently Asked Questions

Is LUT compulsory for all exporters?

LUT itself is not "compulsory" in the sense of a penalty for not having one — but it is required if you want to export goods or services (or supply to SEZ) without paying IGST. If you don't file LUT, you can still export, but you'll need to pay IGST upfront and claim a refund instead, which most exporters try to avoid.

Can a new business or startup file for LUT immediately after GST registration?

Generally, yes — as long as your GSTIN is active and in good standing, and you're not in the category excluded due to tax evasion prosecution above the specified threshold, you can furnish LUT even in your first year of operations. It's worth verifying your eligibility and getting the filing done before your first export invoice.

Do freelancers and small agencies billing overseas clients need LUT too?

Yes. If you're a freelancer or small agency registered under GST and billing clients outside India, your services typically qualify as export of services (subject to meeting the conditions under the IGST Act, such as receipt of payment in convertible foreign exchange). To invoice without charging IGST, you need a valid LUT for the relevant financial year.

What happens if I export without a valid LUT by mistake?

If you raise an export invoice without a valid LUT in place, you would generally be required to pay IGST on that invoice and then apply for a refund of the tax paid. This is more time-consuming and ties up cash compared to exporting under a properly filed LUT, so it's best to confirm your LUT status before invoicing.

Does LUT need to be renewed every year, or does it continue automatically?

LUT is valid for one financial year only and does not roll over automatically. You must furnish a fresh LUT for each new financial year before making zero-rated supplies without payment of IGST in that year. Many businesses set a reminder around March each year to ensure the new LUT is filed before April.

Is there any government fee for filing LUT?

Generally, there is no government fee charged for filing the LUT itself on the GST portal, though it's always worth verifying the current position since portal processes can be updated. The cost most exporters incur is the professional fee paid to a CA, CS, or consultant for correct preparation and filing.

What documents do I need to keep after LUT is filed?

Keep the acknowledgment copy and the system-generated ARN safely, as banks, buyers, or auditors may request proof of a valid LUT during the year. It's also good practice to reference this ARN or LUT number on your export invoices.

Can LUT be rejected, and what do I do if that happens?

In most cases, LUT is deemed accepted upon submission and doesn't require separate departmental approval, since it's a self-declaration process. However, if there are discrepancies (such as GSTIN issues or eligibility concerns), the department may raise a query. In such cases, it's best to consult a GST professional to respond correctly and get the matter resolved quickly.

How Legal Suvidha Makes This Effortless

This is exactly the kind of process where one wrong document, a mismatched detail, or a missed deadline turns into a rejection, a resubmission, or a running penalty. Legal Suvidha handles the whole thing end-to-end so you can focus on your business.

• Fixed, all-inclusive price quoted upfront — professional fee plus government fee, itemised, with no hidden charges appearing later.
• A dedicated Chartered Accountant / Company Secretary who owns your case from the first call to the final certificate.
• Proactive updates and deadline alerts at every stage — we do not disappear after payment.
• Trusted by 10,000+ founders with a 4.9/5 rating and a multi-disciplinary team of CAs, CSs and lawyers.

Talk to a Legal Suvidha expert today for a free consultation and an exact, transparent quote on WhatsApp — and get it done right the first time.