Damage done? Here's how to rebuild:
1. Get current immediately. The most important thing is to stop the bleeding. Pay whatever you owe, including late fees, as soon as possible. Each additional month late makes recovery harder.
2. Ask for a goodwill deletion. Once you're current and have made 6-12 months of on-time payments, write a "goodwill letter" to your lender asking them to remove the late payment from your credit report. This doesn't always work, but it costs nothing to try. Be polite, explain the circumstances, and emphasize your otherwise good history.
3. Set up autopay for everything. The single best thing you can do for your credit going forward is to never miss another payment. Autopay removes human error from the equation.
4. Reduce your credit utilization. While you can't erase the late payment, you can offset some damage by lowering your credit card balances to below 30% of your limits (below 10% is ideal).
5. Be patient. A single 30-day late payment's impact on your score decreases significantly after 12 months, and is minimal after 24 months, even though it stays on your report for 7 years.
6. Don't close the account. Closing the account doesn't remove the late payment from your history, and it reduces your available credit (increasing utilization). Keep it open and use it responsibly.
Realistic timeline: If you had good credit before the missed payment, expect 6-12 months to recover most of the lost points with consistent on-time payments and low utilization.