Context

Where else this is used

Australia

Offset accounts have been available since the 1990s and are offered by every major bank. More than half of Australian mortgages have one attached.

An important distinction: an offset account is not the same product. Deposits sit in a separate linked account and are netted against the loan balance for the purpose of calculating interest, rather than reducing the balance itself. The defensible claim is that the mechanism has thirty years behind it — not that this exact loan does.

It is also worth noting that mainstream does not mean automatic. Australian regulators have found cases where offset benefits were not correctly applied. Check your statement. That goes for any lender, including this one.

New Zealand

Both offset accounts and revolving credit home loans are available. Revolving credit is offered at every major New Zealand bank; offset accounts come from a smaller set.

Canada

All-in-one and readvanceable mortgages are widely available. Manulife One and National Bank All-In-One are built on true sweep accounts and are structurally the closest relatives to a US first-lien line found anywhere.

What this does and does not prove

It establishes that the structure is ordinary rather than fringe. It does not establish that it is right for you, and it does not make any of these products identical to one another.