The automatic stay is the most consequential thing filing does, and it needs no order from anybody. Under 11 USC 362(a), the petition itself operates as a stay against, among other things, the commencement or continuation of any action against the debtor on a pre-petition claim; the enforcement of a judgment already obtained; any act to obtain or control property of the estate; any act to create, perfect or enforce a lien; any act to collect, assess or recover a pre-petition claim; and the setoff of a debt owed to the debtor. In practical terms a wage garnishment stops, a foreclosure sale stops, a repossession stops, and the calls stop, from the moment of filing rather than from a judge's decision weeks later.
The stay has express exceptions at 362(b), and the ones consumers meet most often are family-law matters: establishing paternity, establishing or modifying a support order, custody and visitation, domestic violence proceedings, collecting support from property that is not part of the estate, and withholding income for support under an order. Criminal proceedings are not stayed either.
Filing creates an estate, which is why exemptions decide the outcome. Property of the estate is administered by a trustee, and what the debtor keeps is what exemption law protects. Those figures are adjusted every three years under 11 USC 104 and vary depending on whether federal or state exemptions apply, so no page should recite them. What travels is the shape: retirement savings are protected unusually well, with workplace plan balances generally outside the estate and individual retirement accounts exempt up to a substantial inflation-adjusted cap that does not reach amounts rolled over from a workplace plan.
A discharge kills the debt, not the lien, and the statutory wording is where to see it. Read 11 USC 524(a) closely: a discharge voids a judgment "to the extent that such judgment is a determination of the personal liability of the debtor", and operates as an injunction against any act to collect a discharged debt "as a personal liability of the debtor". Those four words are doing the work. The obligation to pay personally is gone; the creditor's claim against the collateral is not. So a debtor who wants to keep a financed car or a mortgaged house has to keep paying for it, and a debtor who does not can walk away without owing the shortfall.
A companion provision explains where the shortfall goes. Under 11 USC 506(a)(1) a secured creditor's claim is secured only "to the extent of the value of such creditor's interest" in the collateral and is "an unsecured claim to the extent that" the claim exceeds it. That is how one debt becomes two, and the unsecured half is then paid pro rata with other general unsecured claims (11 USC 726(b)), which in a typical consumer Chapter 7 means very little or nothing.
There are two education requirements, not one, and the second one is where cases go wrong. Before filing, 11 USC 109(h)(1) requires an individual to have received a budget and credit counseling briefing from an approved nonprofit agency during the 180-day period ending on the filing date, with narrow exceptions for exigent circumstances and for incapacity or active military duty in a combat zone. After filing, the debtor must complete a separate instructional course in personal financial management, and without it the court will not grant a discharge at all: 11 USC 727(a)(11) in Chapter 7 and 1328(g)(1) in Chapter 13. A case can be otherwise complete and fail on that one step.
The waiting periods are measured from filing, not from discharge. The natural instinct is to count from the date the old case closed, and that is the wrong end of it.
Note what each bar is actually about. Sections 727(a)(8) and (a)(9) are grounds for refusing a discharge, and 1328(f) says the court "shall not grant a discharge" in the new case. None of them prevents filing. A Chapter 13 filed inside the window still delivers the automatic stay and a plan, which is occasionally the point.
Some debts survive whichever chapter you use. The exceptions are a statutory list at 11 USC 523, and they include most taxes, domestic support obligations, debts arising from fraud, criminal fines and restitution, and student loans, which are dischargeable only on a showing of undue hardship proved in a separate proceeding inside the case.