The concern
Mainstream economics fears falling prices. Norges Bank notes that too low inflation "increases the risk of amplifying a downturn through an increase in the real value of debt", and people may delay purchases if they expect lower prices.
Two kinds of falling prices
- Debt-driven deflation: a credit bust where prices fall because borrowers are forced to sell. This is what central banks fear.
- Growth-driven deflation: prices fall because production gets cheaper. Computers and phones have dropped in price for decades, yet people keep buying them.
A fixed money supply in a growing economy tends to give the second kind.
Bitcoin's answers
- People still spend: we buy what we need. Saving more means investing more carefully, not stopping consumption.
- Less debt: debt-deflation spirals need a lot of debt. Money that is not inflated away rewards saving over borrowing.
- Divisibility: one bitcoin has 100,000,000 satoshis. If each unit buys more, prices can simply be quoted in smaller units (see units-sats).
- Supply is not quite fixed yet: about 0.8% new BTC per year as of October 2026, falling with each halving until around 2140.
An open question, honestly
No large economy has run on a fixed-supply money in modern times, so nobody can prove how it would work. But the argument "we need inflation" also assumes the costs land on savers. Bitcoin lets people choose.
Takeaway
Rising purchasing power is a reward for saving, not a flaw – especially when money can be divided almost endlessly.