Debt settlement damages your credit in multiple ways:
Late payments (Months 1-6). When you stop paying creditors, 30-day, 60-day, and 90-day late marks appear on your report. Each one can drop your score by 50-100+ points.
Charge-offs (Months 4-6). Creditors typically charge off accounts after 120-180 days of non-payment. A charge-off is one of the most negative marks possible — it stays on your report for 7 years from the date of first delinquency.
Collections. Some creditors sell delinquent accounts to collection agencies. Now you have both the original charge-off and a collection account on your report.
Settlement notation. Once settled, the account shows "settled for less than full amount" rather than "paid in full." This notation tells future lenders that you didn't pay your full obligation.
Timeline for recovery: After all debts are settled, most people see meaningful credit recovery within 12-24 months if they're simultaneously building positive credit history. The late payments and charge-offs remain for 7 years but carry less weight over time.
Score impact range: During active settlement, expect your score to drop 100-200+ points from where it was before you stopped paying. Post-settlement, recovery to 650+ typically takes 2-3 years with active rebuilding.