First-Lien HELOC
FinancingA first-lien HELOC is a home equity line of credit that sits in first position — meaning it is your primary mortgage, not a second loan behind one. You refinance a traditional mortgage into it: the same debt in a different structure. Instead of a fixed amortization schedule, it is a revolving, usually variable-rate line whose interest is charged on the average daily balance.
How it works. You qualify much like any refinance — typically 680+ credit, often 700–720+ for the highest loan-to-value (up to ~90% CLTV). Many first-lien HELOCs are interest-only during a draw period of around 10 years. Because it is a line, money you pay in stays accessible — you can pay the balance down and redraw it. Paired with velocity banking, proponents claim a far faster payoff, but most of that acceleration simply comes from applying surplus cash — which prepaying any mortgage also does. The genuine edge is liquidity (your extra payments aren’t trapped) and daily interest on parked cash.
The price of that flexibility is a variable rate, usually tied to Prime — a very different animal from a fixed 30-year. It only helps someone with steady positive cash flow and real discipline, and it is largely a US-resident product: it needs US credit and US income, so it rarely fits a non-resident investor. Swapping a low fixed rate for a variable line can backfire if rates rise or your income drops.
Example. An investor refinances a $400,000 mortgage into a first-lien HELOC. She deposits her income against the balance so interest is charged on a lower average balance each day, while keeping the ability to redraw the funds if an emergency or opportunity appears — something a lump-sum principal payment on a fixed mortgage would not allow.
Compare the structures in HELOCs & portfolio loans, and see the mechanics in velocity banking and average daily balance.