You can expect the final credit reporting on your loan by mid-month on the calendar month AFTER you finished paying off your loan.
We report to the credit bureaus on the 10th of each month for all events from the previous month. If you notice a slight drop in your credit score after repaying the loan, despite making all of your payments on time, don't despair! This is normal and temporary. Over time your score should recover and actually increase because of the positive repayment history.