Cascading effect of taxes

Also called: Tax on tax · Topic: Taxation: Direct and Indirect Taxes, GST and Global Tax Issues · NCERT: Class 12, Ch 5 "Government Budget and the Economy"

Meaning

The cascading effect of taxes ("tax on tax") happens when tax is charged on a price that already includes tax paid at an earlier stage. This happens because the tax paid on inputs cannot be set off (deducted) against the tax due on output.

It matters because the hidden tax grows at every stage of the supply chain. That raises final prices and makes Indian goods costlier at home and abroad. Removing it was a main reason for the move to VAT and then GST.

The fix, in one formula (VAT, invoice-credit method): Net tax payable = Tax on output − Tax paid on inputs (input tax credit, ITC)

Explanation

How cascading works

• Indirect tax (a tax on goods and services, not on income): the seller pays it to the government but adds it to the price the buyer pays.
• The chain: a good passes through many stages, from raw material to factory to wholesaler to shop.
• Where cascading starts:
• Stage 1 sells its product and adds tax to the price.
• Stage 2 buys it. The tax is now part of Stage 2's cost.
• Stage 2 is taxed on its full sale price, which already includes Stage 1's tax.

• So tax is charged on tax.

• Rule of thumb: a longer supply chain means more stages and more cascading.

Worked example (10% tax)

Stage	Sale price	Tax on sale (10%)	Credit for input tax	Net tax paid (VAT)	Net tax paid with no credit
Cotton grower → spinner	₹100	₹10	₹0	₹10	₹10
Spinner → weaver (yarn)	₹150	₹15	₹10	₹5 (= 10% of ₹50 value added)	₹15
Total tax to government				₹15 (= 10% of final ₹150)	₹25

• With credit (VAT):
• The spinner owes ₹15 but deducts the ₹10 already paid by the grower.
• The spinner pays only ₹5, which is tax on the ₹50 of value it added.

• Total tax = 10% of the final price = ₹15, however many stages there are.

• Without credit (cascading):

• The spinner pays the full ₹15 on a price that already carries ₹10 of tax.
• Total tax = ₹25. The extra ₹10 is the cascade.

Why cascading happened in pre-GST India (Class 12, Box 5.3)

• Full value taxed at every stage: each stage paid tax on the whole value, including taxes already paid on inputs.
• Very little input credit: credit for tax paid on inputs was minimal.
• Centre and states kept their credits separate:
• Credit could not flow between central taxes (excise, service tax) and state taxes (VAT, CST).

• A state VAT dealer got no credit for central excise or CST already paid.

• Taxes that could not be credited at all:

• Central Sales Tax (CST) was origin-based (the state the goods came from kept it). A buyer in another state could not claim credit for it, so it added to cost at every border.
• Entry tax and octroi (taxes on goods entering a state or a city) also added to cost without any credit.

What makes cascading rise or fall

• Rises with:
• more stages in the supply chain
• more taxes that cannot be credited (for example CST, entry tax)

• separate tax systems that do not give credit to each other (Centre vs states, goods vs services)

• Falls with:

• input tax credit (ITC) across the whole chain
• credit across different taxes (for example the 2004 excise–service tax cross-credit)
• one unified tax on both goods and services (GST)

In India

• Step-by-step reduction of cascading:
• MODVAT (1986): manufacturers could deduct excise paid on inputs from excise due on output. This was India's first step towards VAT.
• CENVAT (2000): MODVAT was renamed and widened into a broader credit system.
• Cross-credit (2004): credit could now flow both ways between excise and service tax.

• State VAT: Haryana was first (2003), and most states followed in 2005. The Empowered Committee of State Finance Ministers (2000) coordinated the move. State VAT still did not cover services and gave no credit for central excise or CST.

• The final fix, GST:

• A national GST was proposed by the Kelkar Task Force on FRBM (2004) and announced in the 2006-07 Budget.
• The 101st Constitution Amendment Act (2016) let both the Centre and the states tax the same supply. It replaced excise, service tax, sales tax, entry tax and entertainment tax with GST [4].

• GST was launched on 1 July 2017. It gives input tax credit across all goods and services, across the whole chain and across states.

• Where cascading can still remain (items outside GST):

• Article 279A(5): the GST Council will recommend the date from which GST applies to petroleum crude, high speed diesel, petrol, natural gas and ATF. Until then these five stay outside GST [5].
• Alcohol for human consumption stays outside GST [3].
• On these items, Union excise (petroleum) and state excise (alcohol) still apply, so their taxes do not enter the GST credit chain.
• Basic customs duty was not subsumed into GST. Only CVD and SAD were subsumed [2].

Don't confuse with

• Value added tax (VAT): VAT is the cure for cascading. It taxes only the value added at each stage (sale price minus input cost). Cascading taxes the full value, including earlier tax.
• Origin-based CST vs destination-based GST: under CST, the producing state kept the tax and buyers could not claim credit, which caused cascading. GST is destination-based, so the consuming state gets the tax and credit flows across states.
• Tax shifting (forward shifting): any indirect tax is passed on to the buyer in the price. That alone is not cascading. Cascading means a tax is charged on top of a tax already inside the price.
• Product tax vs production tax: excise, VAT and GST are product taxes (charged per unit of output), and cascading arises from them. A production tax such as stamp duty is paid whether or not anything is produced.

Prelims Hooks

• Cascading = tax on tax. It happens when tax paid on inputs cannot be set off against tax due on output.
• Formula: Net tax payable = Output tax − Input tax credit (ITC). Under VAT, total tax = tax rate × final price, however many stages there are.
• Credit timeline: MODVAT (1986) → CENVAT (2000) → excise–service tax cross-credit (2004) → GST (1 July 2017).
• Trap: CST was origin-based and not creditable, which was a major source of cascading. GST is destination-based.
• Trap: the 122nd Amendment Bill (2014) became the 101st Constitution Amendment Act (2016) [4].
• Still outside GST: crude, HSD, petrol, natural gas and ATF under Article 279A(5) [5], and alcohol for human consumption [3]. Basic customs duty was not subsumed, but CVD and SAD were [2].

Mains Points

• Cascading was a structural cost, not just a tax problem:
• Taxes piled up inside prices → Indian goods became costlier at home and less competitive abroad.
• CST and entry tax could not be credited → firms set up warehouses in every state for tax reasons, not to save cost.
• Check posts → slower trucks and higher logistics costs.

• GST's input tax credit across the whole chain answers all three.

• The federal bargain behind removing cascading:

• Reform took from 2000 (Empowered Committee) to 2016 (101st Amendment), after 17 years of consensus building [2], because states had to give up taxes they controlled, such as VAT and entry tax.
• This shows the trade-off between fiscal autonomy (a state's freedom to set its own taxes) and a common national market.

• Petroleum and alcohol stay outside GST because they bring states large revenue [5]. Cascading on these inputs therefore continues, which is a case for bringing them into GST.

• Credit chain and compliance:

• The invoice-credit method creates a paper trail. A buyer wants a proper invoice to claim credit, so each stage helps check the one before it.
• Removing cascading therefore also helps widen the tax base and improve compliance. These were aims of the Chelliah Committee (1991-93) and of the Class 11 goal of a "common national market".

Related concepts

• Excise duty
• Service tax
• Value added tax
• Tax reforms

Read more

• Indirect taxes before GST and the reform path