USTaxPenaltySaverCP503
High PrioritySecond Reminder - Immediate Action Required
Second reminder that your tax balance remains unpaid. Immediate attention needed.
Response Deadline
30 days from notice date
Respond before this deadline to avoid additional penalties and enforcement action.
What This Notice Means
CP503 is sent approximately 8 weeks after CP501 if payment has not been received. This is a more urgent notice indicating the IRS will escalate collection efforts if the balance is not resolved. The next notice (CP504) will warn of intent to levy.
Why You May Have Received This
- 1No response to CP501
- 2Partial payment made but balance remains
Required Actions
Pay the balance or contact the IRS immediately
Set up a payment plan to avoid further collection action
Consider Offer in Compromise if you cannot pay the full amount
Your Options
Use these calculators to understand your situation and explore resolution options.
Consequences If Ignored
- Next notice (CP504) will be Intent to Levy
- Federal tax lien may be filed if balance exceeds $10,000
- Increased urgency of collection actions
Tips & Best Practices
- This is the second-to-last notice before levy intent is communicated
- A payment plan can still be established online
- If financial hardship exists, consider Currently Not Collectible status
Related Resources
Legal References
Ready to Take Action?
Our guided workflow will walk you through exactly what to do for this notice, step by step.