Canons of taxation, a good tax system, and direct and indirect taxes

1. What a tax is

Dalton: a tax is “a compulsory contribution imposed by a public authority, irrespective of the exact amount of service rendered to the taxpayer in return.” Its features: it is compulsory, there is no direct quid pro quo, it is paid out of the taxpayer’s income or wealth, and it is levied for the common good. The legal side (tax, fee and cess; Article 265) is in tax: meaning, kinds, and tax distinguished from fee and cess.

2. Adam Smith’s canons

Adam Smith laid down four maxims in An Inquiry into the Nature and Causes of the Wealth of Nations (1776), Book V.

1. Canon of equality (equity). “The subjects of every state ought to contribute towards the support of the government, as nearly as possible, in proportion to their respective abilities; that is, in proportion to the revenue which they respectively enjoy under the protection of the state.” Smith meant proportional taxation; modern writers read ability to pay as requiring progressive taxation, so that sacrifice is equal.
2. Canon of certainty. “The tax which each individual is bound to pay ought to be certain, and not arbitrary.” The time, manner and amount of payment should be clear to the taxpayer and to the collector; uncertainty breeds corruption and evasion.
3. Canon of convenience. “Every tax ought to be levied at the time, or in the manner, in which it is most likely to be convenient for the contributor to pay it.” Land revenue after harvest; tax deducted at source from salary.
4. Canon of economy. “Every tax ought to be so contrived as both to take out and to keep out of the pockets of the people as little as possible, over and above what it brings into the public treasury.” Collection cost should be small, and the tax should not discourage production.

3. Later canons

• Productivity (Bastable): a tax should yield enough revenue to be worth imposing; a few productive taxes are better than many small ones.
• Elasticity: revenue should rise automatically as national income rises, and rates should be adjustable when the State needs more. Income tax is elastic; a fixed land tax is not.
• Buoyancy: revenue should rise more than proportionately with income (a buoyancy above one).
• Flexibility: the tax structure should be adjustable without delay to changing conditions.
• Simplicity: easy for the ordinary taxpayer to understand and comply with.
• Diversity: a mix of direct and indirect taxes spreads the burden and reduces risk to revenue.
• Neutrality: the tax should distort economic choices as little as possible.

4. Characteristics of a good tax system

A good tax system is judged as a whole, not tax by tax. It should be: equitable (progressive overall); adequate (productive enough to finance expenditure); elastic and buoyant; simple and certain; economical to collect and comply with; diversified; supportive of growth (not penalising saving and investment); useful for stabilisation (automatic stabilisers); and administratively enforceable with minimum evasion. Indian reforms illustrate the aims: GST to end cascading, faceless assessment to reduce discretion, and the Income-tax Act, 2025 (from 1 April 2026) to simplify the language of the law.

5. Direct and indirect taxes: meaning

The distinction turns on impact (the person who first pays the tax to the government) and incidence (the person who finally bears it).

• A direct tax is one whose impact and incidence fall on the same person; it cannot be shifted. J.S. Mill: a direct tax is demanded from the very persons who it is intended or desired should pay it. Examples: income tax, corporation tax, wealth tax (abolished in India from 2015–16).
• An indirect tax is paid by one person but shifted to another, usually through the price. Mill: demanded from one person in the expectation that he will indemnify himself at the expense of another. Examples: GST, customs and excise duties.

6. Merits and demerits of direct taxes

Merits

1. Equity: can be made progressive and adjusted to ability to pay, with exemptions for the poor.
2. Certainty: taxpayer knows what he must pay; government knows what it will collect.
3. Economy: collection cost is low, especially with deduction at source.
4. Elasticity: yield rises with income; rates can be raised in emergencies.
5. Civic consciousness: the taxpayer feels the burden and takes interest in how public money is spent.
6. Reduces inequality of income and wealth.
7. Automatic stabiliser: collections rise faster in a boom and fall in a slump.

Demerits

1. Inconvenient: paid in a lump sum and felt directly; unpopular.
2. Evasion: income can be concealed; black money.
3. Narrow base: in India a small share of the population pays income tax.
4. Disincentive: high rates may discourage work, saving and investment.
5. Arbitrary: the degree of progression is a political choice.
6. Complex to comply with; returns and assessment need records.

7. Merits and demerits of indirect taxes

Merits

1. Convenient: paid in small amounts as goods are bought; hidden in the price.
2. Wide coverage: everyone who consumes contributes, including those outside the income-tax net.
3. Difficult to evade when collected at the point of supply or import, and GST input credit creates a paper trail.
4. Elastic for goods with inelastic demand.
5. Can be used for social ends: heavy taxes on tobacco and alcohol (sin taxes); lower rates on necessities.
6. Can promote particular industries through customs duties.

Demerits

1. Regressive: the poor spend a larger share of their income on taxed goods, so they bear a larger share relative to income.
2. Uncertain yield: depends on consumption, which varies.
3. Inflationary: raises prices.
4. No civic consciousness: consumers do not feel the tax.
5. Cascading (tax on tax) in older systems of excise and sales tax, which GST was designed to remove.

How this is examined

“Explain the various canons of taxation” (January 2026, both papers) and “What is a tax? Explain the various canons of taxation” (June 2025); “Explain the merits and demerits of direct and indirect taxes” (January 2026, 100-mark) and “merits and demerits of direct taxes” (August 2024, October 2023). Short notes: “Direct taxes” (June 2025), “Canons of taxation” (August 2024), “Features of good tax system” (October 2023). Quote Smith’s words for each canon; that alone distinguishes a strong answer.