Taxes on Profits
Source: David Ricardo, On the Principles of Political Economy and Taxation, Chapter XV, "Taxes on Profits" • Course status: full course day for the Ricardo principles course
Key terms
Ricardo asks whether capitalists can pass a profits tax into prices. His answer depends on whether the charge hits one trade or capital generally.
| Term | Meaning |
|---|---|
| Profit | The residual return on advanced capital after wages and other costs |
| General profits tax | A proportional charge applied across employments of capital |
| Partial tax | A tax applied to one trade or commodity only |
| Ordinary rate | The return capital can expect across competing employments |
| Capital mobility | The movement of investment away from low-profit trades |
| Necessaries | Goods workers require, whose price can affect money wages |
One trade taxed versus every trade taxed
If hats alone are taxed, hat makers earn less than other capitalists at the old price. Capital leaves, hat supply contracts, and hat prices rise.
If every trade pays the same proportional profits tax, there is no untaxed domestic trade to flee toward. Relative production costs are not changed merely by the uniform charge.
Worked miniature: uniform tax
Three trades each advance £1,000 and earn £100 before tax.
| Trade | Gross profit | 20% profits tax | Net profit |
|---|---|---|---|
| Cloth | £100 | £20 | £80 |
| Shoes | £100 | £20 | £80 |
| Farming | £100 | £20 | £80 |
No trade gains by moving into another. A general tax reduces the net rate from 10 percent to 8 percent.
before: £100 / £1,000 = 10%
after: £80 / £1,000 = 8%
Use the Lab to increase the wage bill while holding sale value fixed. Ricardo treats taxes on workers' necessaries as an indirect profits tax because higher necessary wages reduce the same residual.
Necessaries create a second route to profits
A luxury tax falls on people who choose the luxury. A tax on workers' necessaries can reach profits even when capitalists consume little of the taxed good.
This is why a corn tax matters beyond the capitalist's own grocery bill. It changes the wage cost of employing labour throughout the economy.
tax on workers' necessities
--> cost of subsistence rises
--> money wages rise
--> residual profits fallWhy prices cannot all solve the problem
A single producer can imagine adding the tax to price. But if cloth, shoes, tools, and corn all rise together, capitalists still pay more for what they buy. A general nominal rise does not recreate the real product taken by government.
Taxation reallocates part of the annual product. Changing every price label cannot make that transferred product reappear.
Unequal capital structures
Ricardo adds a complication: trades use different mixtures of fixed capital, circulating capital, and labour. A tax that is nominally equal may affect prices differently when the time capital remains tied up differs.
| Production pattern | Main advance | Sensitivity |
|---|---|---|
| Labour-heavy, rapid turnover | Wages | Strong response to wage changes |
| Machinery-heavy, slow turnover | Fixed capital | Strong response to required return over time |
| Mixed farming | Labour, seed, fixed improvements | Both channels matter |
The simple equal-capital table isolates the core incidence claim; it does not erase Chapter I's complications about durable capital and time.
Key takeaways
- A tax on one trade can raise that commodity's price through capital exit.
- A uniform profits tax lowers net profits because relative trade incentives stay aligned.
- Taxes on workers' necessaries can operate like indirect taxes on profits.
- General price inflation cannot replace the real goods transferred to government.
- Different capital structures complicate exact price movements without overturning the incidence logic.
Checklist
- [ ] Can you contrast a partial tax with a general profits tax?
- [ ] Can you calculate the new net rate after a proportional tax?
- [ ] Can you explain why capital mobility raises one taxed commodity's price?
- [ ] Can you trace a necessaries tax into wages and profits?
- [ ] Can you state why “all firms raise prices” is not a complete answer?