Why would I apply my overpayment to next year's return?

You may want to apply all or a part of your current tax return to your return next year if:

1. Your refund amount is small
2. Your refund is larger than normal
3. It is getting close to the filing deadline and you pay estimated taxes

If you choose to have your refund applied to your next years estimated tax amount, you cannot change your mind and have it refunded to you after the due date of the return.