April 18 was this year’s tax day. What happens if a taxpayer didn’t file or pay their taxes? If the taxpayer is due a refund there is no penalty to file a late tax return. If the taxpayer requested an extension of time to file their income tax return by the tax due date and they paid at least 90 percent of the taxes they owe, they may not face a failure-to-pay penalty. However, the remaining balance must be paid by the extended due date. Interest will be owed on taxes paid after the April 18 due date. If the
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