Mortgage Cure -- 1322(b)(5)
One of Chapter 13s most powerful tools. You can cure mortgage arrears over the life of the plan while resuming regular payments. This stops foreclosure and lets you keep your home.
The arrears are spread over 3-5 years. Regular mortgage payments continue outside the plan (paid directly to the lender).
Vehicle Cramdown -- 506(a)
If your car is worth less than the loan balance, you can "cram down" the secured claim to the vehicles current market value. The remainder becomes unsecured debt (paid at a fraction or 0%). The 910-day rule: cramdown is not available for vehicles purchased within 910 days (about 2.5 years) of filing.
Lien Stripping
If your home is underwater (first mortgage exceeds property value), you can strip off junior liens (second mortgages, HELOCs) entirely. The junior lien becomes unsecured debt. Upon plan completion, the lien is voided. This is only available in Chapter 13, not Chapter 7.
Surrender
You can surrender collateral (car, house) through the plan and treat any deficiency as unsecured debt. This is sometimes the best option if the property is worth significantly less than the debt.
Learn about lien stripping
Lien Stripping Guide