You should be glad when you owe at the deadline, and be kicking yourself if you're entitled to a refund. The former means you got the benefit of your money and now it's time to pay up. The later means you've given the government an interest free loan. At least that's how the mechanics work in Canada, despite the fact that 2/3rd's get refunds with ear to ear grins, it's the "ower's" who should be smiling.