How does M3 money supply affect my salary?

When M3 money supply grows faster than your salary, your share of the total rands in the economy shrinks. You may have more rands in your bank account, but less relative purchasing power compared to the expanding monetary system.

Should I compare my salary to CPI or M3?

Both are useful. CPI tells you about consumer prices. M3 tells you about monetary dilution. If your salary beats CPI but lags M3, you are keeping up with prices but falling behind the expanding money supply - which can affect long-term wealth and asset purchasing power.

Reading time: 4 minutes · Published: Feb 2025

TL;DR: A salary increase can still leave you behind if M3 money supply grows faster than your income over the same period. Compare your salary growth against M3 - not just CPI - to see if you are truly gaining ground or just keeping the treadmill moving.

Money Supply vs Salary Growth

Q: How do I check if my salary is keeping up with M3?

Use the comparison tool on this site. Enter your old salary, your current salary, and the date range. The result shows whether your income kept pace with M3 money supply growth and by how much.

A raise can feel good and still leave you falling behind. The important question is not only whether your salary increased, but whether it increased faster than the monetary system around it.

Most salary conversations focus on CPI inflation. If inflation is reported at 5% and your salary rises by 6%, it sounds like progress. But if the broad money supply grows faster than your income, your share of total rands in the economy has still shrunk. You may have more rands, yet less relative purchasing power.

The Hidden Benchmark

Money supply growth is a useful benchmark because salaries are paid in rands. When more rands are created across the banking and financial system, existing rand income has to compete with a larger pool of money. Prices do not all adjust evenly or immediately, but the pressure shows up over time in housing, assets, services, and the general cost of maintaining a lifestyle.

Example: If your salary grew from R30,000 to R35,000 over 3 years (16.7% total), while M3 grew 30% over the same period, your income did not keep up. You would need R39,000 to maintain the same position relative to the money supply.

This is why a household can receive regular raises and still feel stuck. The nominal number is moving up, but rent, groceries, insurance, school fees, electricity, transport, and savings goals are moving too.

How to Compare Your Salary

Start with your salary at a past date and your salary today. Then compare that growth with M3 money supply growth over the same period. If your salary grew faster than M3, you improved your position relative to the broad rand supply. If it grew slower, you may have lost ground even if the payslip is larger.

The comparison tool is built for exactly this. Enter your old salary, your current salary, and the date range. The result shows whether your income kept up with M3 growth and what the M3-adjusted amount would be.

Why This Matters

Salary growth is not just about surviving next month. It affects how quickly you can save, buy property, invest, support family, or reduce debt. If your income only tracks CPI while the monetary base expands faster, the gap may show up as delayed financial goals.

Use CPI, but do not stop there. Compare your salary against money supply growth to get a tougher and often more realistic view of whether your work is translating into lasting purchasing power.