Paying costs of administration: Facilitates the closing of the estate and distribution of assets to the heir(s)/beneficiaries.; Eliminates the possibility of having to obtain a court order for fees and perfecting a judgment.
Pay creditor claims made upon the estate: Facilitates the closing of the estate.
Stopping a foreclosure sale of estate real property: Preserves the value of the estate, in most cases, as real estate has appreciated to a point that to lose a property(ies) to foreclosure does not maximize the value asset(s) for the inheritor(s).
Provides funds for one or more heirs/beneficiaries to buyout the interest of others: Credit facilities, such as this, are used where one or more want to keep the estates real property and others wish to realize capital from the asset(s).
Funds are provided to rehabilitate the estate’s real property prior to sale of the asset: In most cases this capitalizes on the improved value of the asset; thus allowing the estate to obtain a greater sale amount than if sold "as is".
Pay inheritance and/or other taxes due: Allows the estate to meet the IRS imposed deadlines and avoid costly penalties for non-compliance.

There are times where the estate wishes to make a preliminary distribution. However, the estate may currenly be in an illiquid position.

Emergencies may arise from time to time.: Funeral costs.; Roof/plubming repair.