CONCEPTS · External Accounts

Exorbitant Privilege

The phrase names a real asymmetry: the issuer of the reserve asset borrows abroad in money it prints itself. Everyone else borrows in a currency they do not control, so the external constraint binds sooner, harder and differently.

Borrowing in your own money

The term was coined to describe the gap between the return an issuer earns on its foreign assets and the rate it pays on its own liabilities, which foreigners hold. The wider point is not that spread; it is the currency of denomination. The issuer's external debt is in the money it prints, so a depreciation raises the value of its foreign holdings and does not inflate its own debt burden at all.

For a borrower in somebody else's currency the arithmetic runs the other way. A depreciation raises the local-currency cost of servicing external debt, and if the debt is short-dated the move is immediate. That is why a currency slide is a crisis in one country and a competitiveness story in another.

The constraint arrives later

Every country faces an external constraint: at some point the world stops lending, reserves run down and spending has to adjust. What differs is the mechanism and the timing. For a borrower in foreign currency the stop can be abrupt, because the money to service the debt must be earned in that currency and reserves are finite.

The privilege is not immunity

The issuer's constraint shows up through prices instead: a weaker exchange rate, higher import costs and inflation, or interest rates the central bank has to raise. It arrives later and more gently, and it does not announce itself as a run. The privilege is that adjustment is spread out and delayed, not that it is abolished.

Read it as a difference in degree, never as an exemption. The checkable use is to ask two questions about any country under pressure: what currency is its external debt denominated in, and how much of it comes due soon? Those two answers predict which country gets a crisis and which one gets an inflation problem.

IF YOU REMEMBER ONE THING

DefinitionThe advantage of issuing the reserve asset: the ability to borrow abroad in your own currency, so a depreciation does not inflate your debt.

MechanismOthers must earn foreign currency to service debt and can run out of reserves. The issuer adjusts through prices instead.

CheckAsk what currency the external debt is in and when it comes due. That predicts crisis versus inflation problem.

Next: Foreign Exchange Reserves