IRS Notice Guide
CP503
CP503 — Second Notice — Balance Due
Act Within Deadline — Respond within 21 days
What This Notice Means
You did not respond to the CP14 (first notice). The IRS is sending a second reminder that you owe money and need to pay or contact them.
⏰ Response Deadline: 21 days
Respond by this deadline to resolve the issue and avoid additional penalties.
What to Do
- 1
Pay the balance or set up an installment agreement immediately
- 2
Do not ignore — the next notice (CP504) will threaten to seize your state refund
- 3
Call 1-800-829-1040 to discuss payment options
- 4
Request penalty abatement if this is your first balance
Guides That Can Help
IRS Installment Agreement Kit
Set up a monthly IRS payment plan yourself — no attorney needed.
$1
Penalty Abatement Request Letter
Remove IRS penalties — often 20–25% of what you owe.
$1
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