I recently recorded a cash payment of $99 for Admin services. The transactions were CR Bank A/C $90, DR 5115 Admin Costs $90 DR 2510 GST Paid $9.

I was later advised of an error - the cost should have been $88 - and I received a redund of $11.

I could just reverse the original entry and enter the correct amounts in a new transaction, but then the refund would not show up in the Bank reconciliation.

The other option that I considered was entering a journal with DR Bank A/C  $11,CR 5115 Admin Costs $10 CR 2520 GST Collected $1.

What is the best way to handle this?