A government shutdown doesn't switch off the federal government. It switches off only the parts Congress funds one year at a time.

Roughly half of FSA holders forfeit money every year, while HSA balances never expire. The difference traces back to a single line in the federal tax code.

The IRS doesn't recognize domestic partners as spouses, so employer-paid health coverage for a partner becomes taxable "imputed income" on your paycheck, unless the partner qualifies as your tax dependent.

More than 830,000 taxpayers got a letter saying their refund is approved but on hold. Here's what's actually driving the delays, and how to get unstuck faster.