Lump sum vs line of credit reverse mortgage

Lump sum and line of credit are two payout options on the same HECM, not two loans: the lump sum is fixed-rate and drawn in full at closing, while the line of credit is adjustable-rate and its unused portion grows over time at the note rate plus 0.5% (24 CFR §206.25).

Lump sum and line of credit are not two different loans. They are two payout options on the same HECM reverse mortgage, and the choice between them shapes the rate, how interest accrues, and how much borrowing power the loan keeps in reserve. A borrower picks one at closing, so it is worth understanding the difference before that point. The matrix compares the two options, each cell sourced.

Last reviewed 2026-05-22

How do a lump sum and a line of credit compare side by side?

| Dimension | Lump sum draw | Line of credit | |---|---|---| | When you receive the money | All at once, at closing (24 CFR §206.19) | When you choose, by drawing against the line over time (24 CFR §206.19) | | Rate type available | The fixed-rate HECM is lump-sum only; adjustable is also available (HUD ML 2014-11) | Adjustable rate only; the fixed-rate HECM cannot use a line of credit (HUD ML 2014-11) | | What interest accrues on | The full amount drawn at closing, from day one | Only the portion actually drawn; the undrawn line accrues no interest | | Does the undrawn amount grow? | Not applicable; nothing is left undrawn | Yes; the unused line grows at the note rate plus the 0.5% MIP rate (24 CFR §206.25) | | Can the line be reduced by the lender? | Not applicable | No; the HECM line is committed for the life of the loan | | Mortgage insurance | 2% upfront FHA MIP + 0.5% annual MIP on the balance (24 CFR §206.105) | 2% upfront FHA MIP + 0.5% annual MIP on the balance (24 CFR §206.105) | | Typical use case | A known, one-time need for the full amount at closing | An uncertain or future need, where reserve borrowing power has value |

When does a lump sum fit?

A lump sum fits a borrower with a single, known, immediate use for the money: paying off an existing mortgage at closing, covering a large one-time expense, or funding a defined project. It is also the only way to get a fixed-rate HECM, so a borrower who specifically wants a rate locked for the life of the loan takes the lump sum to get it. The cost of that choice is that interest and MIP accrue on the entire balance from day one, whether or not the borrower has spent the money. Drawing the full amount and leaving much of it in a low-yield account is generally an expensive way to hold cash.

When does a line of credit fit?

A line of credit fits a borrower whose need is uncertain or lies in the future. Interest accrues only on what is actually drawn, so the borrower is not paying to hold money they have not used. The growth feature is the structural advantage: the unused portion of the line grows at the note rate plus the MIP rate, so a line opened at 65 is larger at 80 without the borrower doing anything, and the lender cannot freeze or cut it. The trade is that the line of credit is adjustable-rate only; a borrower who wants a fixed rate cannot have one alongside a line of credit.

Can you combine a lump sum and a line of credit?

A borrower does not always have to choose one or the other. The HECM also offers modified tenure and modified term, which pair a line of credit with monthly payments, and a borrower can take part of the proceeds as an initial draw and leave the rest as a line. A HUD-approved counselor can walk through the combinations against the borrower's actual cash-flow picture.

How do you choose between a lump sum and a line of credit?

The row order is not a ranking. The decisive rows are usually the rate-type row, for a borrower who wants a fixed rate, and the growth row, for a borrower who values reserve borrowing power. A borrower with a known, immediate need leans toward the lump sum; a borrower with an uncertain or future need leans toward the line. Model the draw in the reverse mortgage calculator, and read how the formula handles each option in the methodology page.

Related comparisons

Other reverse-mortgage comparisons that bear on the same decision:

• Tenure vs term payments
• Fixed vs adjustable-rate reverse mortgage
• Reverse mortgage vs line of credit

The full set is on the comparisons hub.

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