Sound Money Principles
Module 3 of Economics of Money
What Is Sound Money?
Sound money is money that:
- Maintains purchasing power over time
- Cannot be arbitrarily created or debased
- Is chosen by the market, not imposed by force
- Serves as a reliable store of value
"Sound money is money that is not liable to sudden appreciation or depreciation in value." — Ludwig von Mises
The Six Properties of Good Money
1. Scarcity
The supply must be limited and difficult to increase.
| Money | Scarcity Mechanism | Rating |
|---|---|---|
| Gold | Geological rarity, mining cost | Excellent |
| Fiat | Central bank discretion | Poor |
| Bitcoin | Mathematical cap (21M) | Perfect |
Why it matters: If anyone can create more, existing units lose value. Scarcity protects holders.
2. Durability
Money must not decay, corrode, or deteriorate over time.
| Money | Durability | Notes |
|---|---|---|
| Cattle | Poor | They die |
| Paper | Moderate | Wears out, burns |
| Gold | Excellent | Lasts millennia |
| Bitcoin | Perfect | Digital, infinitely copyable |
3. Divisibility
Must be splittable for transactions of any size.
| Money | Smallest Unit | Practical? |
|---|---|---|
| Real estate | House | No |
| Gold | ~$5 flake | Difficult |
| USD | $0.01 | Yes |
| Bitcoin | 1 satoshi (0.00000001 BTC) | Yes |
Bitcoin advantage: 100 million satoshis per bitcoin enables micropayments.
4. Portability
Easy to transport value across distance.
| Money | $1 Million Weighs | Transport |
|---|---|---|
| Gold | ~25 kg | Difficult, risky |
| Cash | ~10 kg | Bulky, risky |
| Bank wire | 0 kg | Requires permission |
| Bitcoin | 0 kg | Permissionless, instant |
5. Fungibility
Each unit is interchangeable with any other.
| Money | Fungibility | Issue |
|---|---|---|
| Diamonds | Poor | Each unique |
| Gold bars | Good | Serial numbers exist |
| USD | Excellent | A dollar is a dollar |
| Bitcoin | Good* | Blockchain history visible |
*Bitcoin's transparency creates some fungibility concerns (tainted coins).
6. Verifiability
Easy to confirm authenticity.
| Money | Verification | Difficulty |
|---|---|---|
| Gold | Acid test, density | Requires expertise |
| Cash | UV, watermarks | Moderate |
| Bank balance | Trust the bank | Counterparty risk |
| Bitcoin | Cryptographic proof | Anyone can verify |
Hard Money vs. Easy Money
Hard Money
- Difficult to produce more
- Maintains value over time
- Discipline on spending
- Examples: Gold, Bitcoin
Easy Money
- Can be created at will
- Loses value over time
- Enables deficit spending
- Examples: Fiat currencies
The Stock-to-Flow Ratio
Stock: Total existing supply Flow: Annual new production
S2F = Stock ÷ Flow
| Asset | Stock-to-Flow | Years to Double Supply |
|---|---|---|
| Gold | ~62 | 62 years |
| Silver | ~22 | 22 years |
| Bitcoin (2024) | ~57 | 57 years |
| Bitcoin (post-2140) | ∞ | Never |
| Fiat | ~0.1-5 | Variable |
Higher S2F = Harder money = Better store of value.
The Austrian School Perspective
Austrian economists emphasize:
1. Time Preference
Sound money lowers time preference, encouraging saving and investment.
- High time preference: Spend now, don't save
- Low time preference: Save, invest, build for future
Inflationary money raises time preference (spend before it loses value).
2. Economic Calculation
Accurate prices require stable money. Inflation distorts price signals.
3. Malinvestment
Artificially cheap money causes bad investments that must eventually liquidate (boom-bust cycles).
4. Spontaneous Order
The best money emerges from voluntary market choice, not government decree.
Historical Sound Money
The Classical Gold Standard (1870-1914)
Results:
- Price stability (slight deflation in some periods)
- Real wage growth
- Rapid industrialization
- Global trade expansion
Average annual inflation: ~0%
Compare to fiat era (1971-present): ~3-4% average.
Purchasing Power Preservation
$100 in 1913 dollars:
- Worth ~$4 today (96% loss)
$100 in gold (1913):
- Worth ~$3,000+ today (30x gain)
The Case for Sound Money
Economic Benefits
- Encourages saving: Money holds value
- Accurate price signals: No inflation distortion
- Lower time preference: Long-term thinking
- Prevents bubbles: No artificial credit expansion
- Protects workers: Wages maintain purchasing power
Social Benefits
- Reduces inequality: No Cantillon effects
- Limits government: Can't print to fund wars/programs
- Financial privacy: Less surveillance
- Individual sovereignty: Control your own wealth
Critiques of Sound Money
Keynesian Objections
- Deflationary spirals: People hoard, don't spend
- Sticky wages: Can't cut nominal wages → unemployment
- Crisis response: Need flexibility to stimulate
- Gold supply: Mining determines money supply (arbitrary)
Responses
- Deflation isn't necessarily harmful (technology shows this)
- Real wages matter more than nominal
- Crises are often caused by easy money in the first place
- Bitcoin's supply is more predictable than gold
Bitcoin as Sound Money
Bitcoin scores highly on all properties:
| Property | Bitcoin's Score | Why |
|---|---|---|
| Scarcity | 10/10 | Hard cap of 21 million |
| Durability | 10/10 | Digital, cannot decay |
| Divisibility | 10/10 | 8 decimal places |
| Portability | 10/10 | Send anywhere instantly |
| Fungibility | 8/10 | Transparent chain |
| Verifiability | 10/10 | Cryptographic proof |
Bitcoin's Monetary Policy
Block Reward Schedule:
2009-2012: 50 BTC per block
2012-2016: 25 BTC per block
2016-2020: 12.5 BTC per block
2020-2024: 6.25 BTC per block
2024-2028: 3.125 BTC per block
...
2140: 0 BTC per block (21M cap reached)
Key feature: Everyone knows the rules. No surprises. No manipulation.
Key Takeaways
- Sound money preserves value over time
- Six properties determine money quality
- Stock-to-flow measures hardness
- Fiat fails the sound money test
- Gold was sound but has physical limitations
- Bitcoin combines gold's soundness with digital advantages
Questions to Consider
- Would you rather be paid in 1970 dollars or 1970 gold?
- Does sound money limit government too much?
- Can an economy function with deflationary money?
- Is Bitcoin "too volatile" to be sound money?