CP21H

A CP21H says the IRS changed your return in a way that adjusted a shared responsibility payment — the old health-coverage payment under IRC section 5000A. The payment was discontinued as of 2018, but adjustments to old years still produce these notices, ending in a balance, a refund, or zero.

“Your shared responsibility payment changed. If a balance remains, pay by the printed date or arrange payments; if a refund results, expect it within two to three weeks. One thing worth knowing: the law prohibits us from using liens or levies to collect this particular payment — though interest accrues and refunds can be applied to it.”

This balance is unusually gentle by law: no liens, no levies — the IRS's own page says so. It still grows interest and eats future refunds, so it's worth resolving, but the fear level warranted here is low.

• The notice, showing the adjustment
• The old year's return and health-coverage records
• Payment records for that year
• Refund expectations, if the adjustment ran your way

• Confirming the recalculation of a discontinued payment is even correct
• Weighing the true urgency, given the no-lien no-levy protection
• Arranging payment or offset strategy where a balance stands
• Recovering refunds the adjustment produced