The U.S. IRS has issued a release encouraging individuals to do an end-of-summer tax checkup to avoid tax surprises next year, including tax withholding or payment updates. --- IRS encourages people to do an end-of-summer tax checkup to avoid tax surprises next year WASHINGTON — The Internal Revenue Service today encouraged taxpayers to consider using the end of the summer to make tax withholding or payment updates to avoid a potential surprise next year at tax time. While most taxpayers get a refund after filing their taxes, many also find they unexpectedly owe taxes. This can be due to a...