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5-Year Draw, 15-Year Repayment HELOC
The compact HELOC structure: a shorter 5-year window for interest-only draws, followed by 15 years of amortizing repayment. Higher monthly payments at the transition, lower lifetime interest, and a different set of lenders than the standard 10/20 product.
Why the 5/15 exists
The 5/15 structure emerged as a regional-bank response to two consumer concerns in the post-2008 HELOC market. First, the long 10-year draw period was associated with payment-shock surprises that hit borrowers in 2017 to 2019 as the 2007 to 2009 origination wave hit its transition dates. A shorter draw window forces the borrower to engage with the amortization math sooner, when the project (or consolidation, or emergency reserve use) is fresher in memory. Second, the shorter total loan term (20 years versus 30 years) keeps total lender exposure shorter, which the bank prices into a slightly more favourable margin. The result is a product that is mathematically more efficient for borrowers who do not need the full 30-year window.
The interest-only draw payment on a 5/15 is identical to the same balance on a 10/20: balance times rate divided by twelve. The difference is the draw window length. A borrower who needs to draw across a 5-year renovation phase gets the same monthly cash flow as on a 10/20 during the draw period; a borrower who needs to draw across 10 years of phased projects discovers the 5/15 forces them to lock down further draws halfway through their project timeline. Choose based on how long you actually intend to use the line as a credit facility, not based on cash-flow preference alone.
The repayment math on a 5/15 over 180 months at 7.02% returns $898.83 per month per $100,000 balance, with total repayment interest of $61,800. The same balance on a 10/20 over 240 months at 7.02% returns $775.74 per month and $86,300 in repayment interest. The 5/15 borrower pays $123 more per month for 180 months ($22,140 in additional monthly outlay) and saves $24,500 in interest, which nets to a roughly break-even outcome on cash flow over the repayment period, with the 5/15 finishing the loan five years sooner.
5/15 vs 10/20 side-by-side at common line sizes
| Line size | 5/15 repay | 10/20 repay | 5/15 total interest | 10/20 total interest |
|---|---|---|---|---|
| $50,000 | $450 | $388 | $48,400 | $78,250 |
| $100,000 | $899 | $776 | $96,900 | $156,500 |
| $150,000 | $1,349 | $1,164 | $145,400 | $234,750 |
| $200,000 | $1,798 | $1,552 | $193,800 | $313,000 |
| $250,000 | $2,247 | $1,939 | $242,300 | $391,300 |
Total-interest column assumes balance held at full draw throughout the draw period, no extra principal payments. Rate held at 7.02% throughout.
Faster shock onset: what the transition looks like
The 5/15 payment-shock transition arrives in month 61, just under five years after origination. For borrowers who used the line for a renovation completed in years 1 to 2, the shock arrives well after the project is finished and the financial windfall (added home value, completed improvements) has been absorbed. For borrowers using the line as an ongoing facility, the shock interrupts the credit-line availability earlier than the 10/20 structure does, forcing earlier decisions about further borrowing (cash-out refinance, new HELOC, fixed home equity loan).
The shock magnitude on a 5/15 is 54% at 7.02% on a fully drawn balance, compared to 33% on a 10/20. The higher percentage shock reflects the shorter repayment window: amortizing the same balance over 180 months instead of 240 months requires a larger monthly payment. For a borrower who entered the line expecting smooth cash flow, the 5/15 shock is more disruptive. For a borrower who planned for the shock and structured savings or income to absorb it, the 5/15 simply accelerates a transition they were already expecting.
The CFPB's Regulation Z 1026.40requires lenders to disclose the payment-shock math at application, including worst-case scenarios at the lifetime cap rate. On a 5/15 the worst-case repayment payment at the 18% lifetime cap on $100,000 would be $1,610 per month, nearly triple the 7.02% baseline. That number is extreme and unlikely in most rate paths, but the borrower should read the disclosure to understand the regulatory ceiling on what the lender can charge under the contract.
When the 5/15 wins
The 5/15 wins for borrowers who: have a clear, time-bounded use of funds (a single 1 to 3 year renovation, a defined consolidation campaign, a known-end-date emergency reserve); prefer the structural discipline of mandatory amortization to start sooner; want to retire the debt completely within 20 years of origination; can absorb the higher monthly payment in repayment without strain; and are confident in stable income across the next 15 to 20 years. The 5/15 is mathematically more efficient for these borrowers and the structural design reinforces the desired financial behaviour.
The 5/15 loses for borrowers who: anticipate using the line as an ongoing credit facility across 8 to 10 years of phased projects; want maximum optionality and flexibility over a long horizon; expect variable income or near-term financial transitions that make a higher fixed payment risky; or plan to sell the home within 5 to 7 years (in which case any HELOC structure is being used inefficiently).
For borrowers who are unsure which structure fits, two heuristics help. First, look at the actual draw schedule you expect to follow. If most of the draws happen in the first 3 years, the 5/15 fits. If draws stretch beyond year 5, the 10/20 fits better. Second, look at your appetite for active financial management. The 10/20 gives 10 years to voluntarily pay down principal and reduce the eventual shock; if you trust yourself to do that work consistently, the 10/20 is the more flexible choice. If you prefer the bank to enforce the discipline structurally, the 5/15 does that for you.
Frequently asked questions
Which lenders offer a 5/15 HELOC?
The 5/15 structure (5-year draw, 15-year repayment) is most commonly offered by US Bank, Citizens, Truist, PNC (as an option alongside their 10/20), and many credit unions. Bank of America historically focused on 10/20 and 10/30 structures. The 5/15 product is more common at regional banks and credit unions than at the four largest national banks.
What is the payment shock on a 5/15 vs a 10/20?
At full balance $100k and 7.02%, the 5/15 shock is from $585 (interest-only) to $899 (15-year amortizing) per month, a $314 jump (54%). The 10/20 shock at the same balance is from $585 to $776, a $191 jump (33%). The shorter repayment term amortizes the balance faster, raising the payment more than a longer repayment term would.
Is a 5/15 HELOC cheaper in total interest than a 10/20?
Yes if rates hold constant. A fully drawn $100k 5/15 at 7.02% pays $35,100 in draw-phase interest plus $61,800 in repayment-phase interest, total $96,900. A fully drawn $100k 10/20 at the same rate pays $70,200 plus $86,300, total $156,500. The 5/15 saves $59,600 over the loan life. The trade-off is much higher monthly payments during repayment and a shorter window of borrowing flexibility.
Why would a borrower choose 5/15 over 10/20?
Three reasons typically. First, a borrower who knows they want to retire the balance quickly and prefers structural discipline over voluntary discipline. Second, a borrower whose project completes within 5 years and who does not need the longer draw window. Third, a borrower whose lender does not offer 10/20 and 5/15 is the standard product.
Can I prepay a 5/15 HELOC without penalty?
Generally yes. The vast majority of US HELOCs (5/15 included) have no prepayment penalty on principal. The most common penalty is an early-closure fee of $300 to $500 if the line is closed within the first 24 to 36 months, which applies regardless of whether the balance is paid off.
Can I refinance a 5/15 into a 10/20 mid-loan?
Mechanically yes by closing a new HELOC and using it to pay off the existing 5/15, but the new HELOC requires full re-qualification: new appraisal, new income verification, new credit pull, new closing costs. The math depends on the rate environment. If rates have dropped, refinancing both extends the term and lowers the rate, which is typically advantageous. If rates have risen, the refinance is usually not worth the friction.