Covered Bonds

A bank's ordinary bond is a promise backed by the bank as a whole — if the bank fails, bondholders stand in line with everyone else. A covered bond is a different promise: the bank still owes the money, but a specific pool of assets, usually high-quality mortgages, is legally ring-fenced and set aside exclusively to make sure that particular bond gets paid, even if the bank itself goes under. Investors get two chances at repayment instead of one, and the market pays for that with a lower yield.

How the dual protection works

The issuing bank keeps a pool of eligible assets — typically prime residential mortgages or public-sector loans that meet strict quality and overcollateralization rules — on its balance sheet, but that pool is legally segregated so that, if the bank becomes insolvent, covered bondholders have a priority claim on it ahead of general creditors. Crucially, the assets stay dynamic: if a mortgage in the pool is prepaid or defaults, the bank must replace it to keep the pool's value and quality above a required minimum, unlike a securitization where the pool is fixed at issuance. If the pool alone somehow isn't enough, bondholders still have an ordinary unsecured claim on the rest of the bank — hence "dual recourse."

Worked example

A bank issues a 5-year covered bond backed by a pool of prime residential mortgages, overcollateralized at 8% (the pool is worth 108% of the bonds it backs). The bank's ordinary 5-year unsecured bond yields 5.20%; the covered bond yields 4.55%, a 65 basis point pickup for investors in the unsecured paper, or a 65 basis point saving for the bank issuing covered.

1. If the bank fails, covered bondholders' first claim is on the mortgage pool, worth 108 for every 100 of bonds outstanding — even after some mortgage losses, the pool would likely still cover the bonds in full.
2. Only in the unlikely event the pool itself is insufficient do covered bondholders fall back to an unsecured claim alongside ordinary creditors.
3. The 65 basis point spread between the covered and unsecured bond is the market's price for that extra layer of protection — cheaper funding for the bank, in exchange for legally committing specific high-quality assets that can no longer be used to raise other unsecured debt.

What this means in practice

Banks issue covered bonds as a stable, relatively cheap source of long-term funding, particularly useful for financing long-dated mortgage books, and the instrument has been a core funding tool for European banks for decades (with growing use elsewhere). For investors, covered bonds offer a way to get bank-like yield with structurally lower risk than unsecured bank debt, which is why regulators in many jurisdictions give covered bonds favorable treatment in bank liquidity and capital rules.