You can pay up to Rs. 5,000 per transaction and up to Rs. 10,000 per day (you can transact multiple times but for a total amount up to Rs. 10,000 in a day).

These limits are to make sure that your card is safe and cannot be misused. These limits cannot be changed, however, you can enable or disable the feature any time from the app (Click on Menu > Savings Account > Card Settings > Card Locks > Tap & Pay).