My Indian debit or credit card keeps failing on the g.a.s.t. payment portal. What's going wrong?

The most common cause is not a glitch on g.a.s.t.'s end but your Indian card declining a foreign-currency transaction because international payments were never enabled on that card. The EUR 150 fee is charged in euros and processed as a cross-border payment, so your card must be cleared for that.

Enable International Transactions First

Call your bank and enable international or foreign transactions at least 48 hours before you plan to register. Also avoid registering over a government or PSU cybercafe network, since these sometimes block international payment gateways entirely; use a private, stable internet connection instead.

If a Payment Fails or Double-Charges

If a payment fails or you are charged twice, contact g.a.s.t. directly with your registration reference and bank transaction reference in hand. APS India has no visibility into dMAT billing, so they cannot resolve a payment issue for you.

My Advice

Call your bank today, even before you are ready to register, and enable international transactions on your card. Sorting the issue out a week in advance rather than the night before your registration attempt avoids the single most common last-minute panic we see with this process.