LUT vs Payment of IGST for Exports in 2026 – Which Is Better?

In 2026, exporters under Goods and Services Tax (GST) continue to have two options for zero-rated supplies (exports):

1. Export under LUT (Letter of Undertaking) without payment of IGST
2. Export on payment of IGST and claim refund later

Choosing the right method depends on your cash flow position, compliance capacity, and refund experience.

What is LUT?

LUT (Letter of Undertaking) allows exporters to export goods or services without paying IGST upfront.

• No tax payment at the time of export
• Claim refund only for unutilized Input Tax Credit (ITC)
• LUT must be filed annually in Form RFD-11
• Available to all eligible exporters (except certain defaulters)

Advantages of LUT

✔ No working capital blockage
✔ No need to wait for IGST refund
✔ Better cash flow management
✔ Ideal for MSMEs and small exporters

Disadvantages of LUT

✘ Refund limited to accumulated ITC
✘ If conditions are violated, tax + interest payable

What is Export with Payment of IGST?

In this method:

• Exporter pays IGST while filing GSTR-3B
• Claims refund of the same IGST paid
• Refund is processed based on shipping bill and GST return matching

Advantages of the IGST Payment Method

✔ Faster refund (in many cases auto-processed)
✔ Suitable for exporters with sufficient cash balance
✔ No separate refund application for ITC

Disadvantages

✘ Working capital gets blocked
✘ Refund delays affect liquidity
✘ Risk of mismatch errors delaying refund

Which is Better in 2026?

For Small & Medium Exporters – LUT is Better

• Saves cash flow
• No upfront tax burden
• Less financial stress

For Large Exporters with Strong Cash Flow – IGST Payment Can Work

• If refund system is smooth
• If systems are well-managed
• If export volume is high and consistent

Key Comparison Table

Expert Recommendation for 2026

In practical terms, LUT is generally better in 2026 because:

• Cash flow is critical for business survival
• Refund delays still occur in many cases
• Government encourages LUT route for ease of export

Unless your business has strong financial reserves, export under LUT is safer and more efficient.

Conclusion

Both methods are legally valid under GST law. However:

• If your priority is cash flow stability → Choose LUT
• If your priority is refund-based compliance and you have surplus funds → Choose IGST Payment

For most exporters in 2026, LUT remains the preferred and financially smarter option.