What it means
When a government issues debt it can promise one of two things. It can pledge only the revenue from a particular asset, or it can pledge its general resources and taxing power, and the second of these is what the phrase full faith and credit describes.
The practical difference shows up in what happens when money is short. A project-backed bond can default if the project underperforms, whereas a general obligation carrying full faith and credit ranks against the whole balance sheet and revenue base of the issuer.
For investors this translates directly into pricing. Debt of a national treasury in its own currency is normally used as the risk-free reference rate, and everything else is quoted as a spread above it, so the phrase sits at the foundation of how almost every other security is valued.
The pledge is strong but not magical. A national government that borrows in its own currency has more room than a city, which cannot print money and can in some jurisdictions enter formal insolvency proceedings, so investors still look at tax base, debt levels and political willingness to pay.
Businesses meet the concept in three places. The first is parking surplus cash in government paper, the second is comparing the yield on a corporate bond against a government benchmark, and the third is relying on a government-guaranteed loan scheme where the guarantee itself carries the pledge.
In practice
Real-world examples.
Example
A city funds a new water treatment plant with two separate issues: a revenue bond repaid only from water charges, and a general obligation bond backed by full faith and credit. The general obligation issue prices roughly half a percentage point cheaper because taxpayers, not just water customers, stand behind it.
Example
A corporate treasurer holding $2,000,000 of surplus cash for eighteen months buys short-dated government paper rather than a higher-yielding corporate note. The board's policy prioritises certainty of principal over the extra income, precisely because of the government pledge.
Example
A small manufacturer obtains a bank loan under a government-guaranteed lending scheme. The bank lends at a lower rate than it otherwise would because the guaranteed portion carries the state's full faith and credit rather than the borrower's own credit standing.
Formula
Calculation
The concept is not itself a formula, but its effect is measured through the credit spread:
Credit Spread = Yield on Other Bond - Yield on Government Bond of Similar Maturity
Suppose a ten-year government bond backed by full faith and credit yields 4.20%, while a ten-year bond issued by a mid-sized manufacturer yields 6.00%.
Credit spread = 6.00% - 4.20% = 1.80 percentage points, or 180 basis points.
On a $2,000,000 investment held for a year, the government bond pays $2,000,000 x 4.20% = $84,000, while the corporate bond pays $2,000,000 x 6.00% = $120,000. The extra $36,000 is what the market charges for giving up the taxing-power pledge, and it is the price of accepting that this particular company might not pay.Case study
Seen in the real world.
The following is an illustrative and fictional example. Northbank Instruments, an invented scientific equipment maker, held $2,000,000 set aside for a factory expansion due to start in two years and was weighing where to keep it.
A broker pitched a corporate bond yielding 6.00% against a government bond of the same maturity yielding 4.20%, a spread of 180 basis points worth $36,000 a year on that balance. Northbank's audit committee asked a simple question: was $36,000 of extra income worth any chance at all of not having the $2,000,000 available when the builders arrived?
The committee chose the government bond and wrote the reasoning into the treasury policy: money earmarked for a committed capital project sits only in instruments backed by full faith and credit. The illustrative point is that the pledge is bought with yield given up, and that trade is a governance decision rather than an investment tip.
Watch out
Common mistakes.
- Assuming every bond issued by a government body carries the pledge, when revenue bonds are backed only by the income of a specific project and can default while the issuer stays solvent.
- Treating full faith and credit as a guarantee of price stability, when the bond's market value still falls if interest rates rise even though repayment at maturity is not in doubt.
- Ignoring currency, because a government's taxing power supports debt in its own currency far more convincingly than borrowings denominated in someone else's.
Questions
People also ask.
What does the pledge actually cover?
The issuer commits its general resources and its power to raise taxes to repay principal and interest, rather than the cash flows of a single asset or project.
Why do these bonds pay less?
The lower yield is the price investors pay for very high certainty of repayment, and the gap against riskier debt is quoted as the credit spread.
Can an issuer with full faith and credit still default?
It is rare but possible, particularly for municipal issuers that cannot create currency, which is why analysts still examine tax base, debt load and political willingness to pay.
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