GST Calculator

GST Calculator-GST can make a product or service price confusing, especially when you need to calculate tax quickly.A GST Calculator helps you find the GST amount, final price, taxable value, CGST, SGST, and IGST without doing the calculation manually.Looking for more free online calculators? Explore our complete collection of EMI calculator, NPS Calculator ,Long Term Capital Gain Tax Calculator, Currency Converter,Gold Loan Calculator,conversion and everyday calculators at CalculatorGuides to find the right tool for your needs.

You can use it when:

• Adding GST to a price
• Removing GST from a GST-inclusive price
• Preparing an invoice
• Checking a product price
• Calculating CGST and SGST
• Calculating IGST
• Comparing prices before and after GST

The official GST e-invoice system also calculates the taxable value and separately records IGST, CGST, SGST/UTGST and applicable cess. 

What Is GST?

GST stands for Goods and Services Tax.

It is an indirect tax charged on the supply of goods and services in India.

Instead of using several different indirect taxes at different stages, GST provides a common tax framework for taxable supplies.

The GST amount depends on the applicable GST rate for the particular product or service.

Common GST rates used for different supplies can include:

• 0%
• 5%
• 12%
• 18%
• 28%

The applicable rate depends on the specific goods or service and current GST classification.

What Is a GST Calculator?

A GST Calculator is an online tool that calculates the GST amount and final price from a given taxable amount and GST rate.

For example, if:

Price = ₹10,000

and:

GST = 18%

GST amount:

₹1,800

Final price:

₹11,800

The calculator can perform this calculation instantly.

GST Calculator Formula

When GST needs to be added to a price:

GST Amount = Original Price × GST Rate ÷ 100

Then:

Final Price = Original Price + GST Amount

For example:

₹20,000 × 18 ÷ 100

= ₹3,600 GST

Final price:

₹20,000 + ₹3,600

= ₹23,600

GST Inclusive Formula

Sometimes the price already includes GST.

In this situation, you should not simply calculate the GST percentage on the full amount.

The GST component is calculated using:

GST Amount = Inclusive Price × GST Rate ÷ (100 + GST Rate)

For an 18% GST rate:

GST Amount = Inclusive Price × 18 ÷ 118

For example:

GST-inclusive price:

₹11,800

GST amount:

₹11,800 × 18 ÷ 118

= ₹1,800

Original taxable value:

₹11,800 − ₹1,800

= ₹10,000

GST Exclusive vs GST Inclusive

This is one of the most important differences when using a GST Calculator.

GST Exclusive

GST is added to the displayed price.

Example:

₹10,000 + 18% GST = ₹11,800

GST Inclusive

GST is already included in the displayed price.

Example:

₹11,800 including 18% GST

Taxable value:

₹10,000

GST:

₹1,800

GST Calculator Example

Suppose a service costs:

₹50,000

GST rate:

18%

GST:

₹50,000 × 18 ÷ 100

= ₹9,000

Total:

₹50,000 + ₹9,000

= ₹59,000

So:

Amount	Value
Original Price	₹50,000
GST Rate	18%
GST	₹9,000
Final Price	₹59,000

How to Calculate CGST and SGST

For an applicable intra-State supply, GST can generally be divided into:

• CGST
• SGST

For an 18% GST rate:

CGST = 9%

SGST = 9%

Suppose the taxable value is:

₹20,000

CGST:

₹20,000 × 9%

= ₹1,800

SGST:

₹20,000 × 9%

= ₹1,800

Total GST:

₹3,600

Final invoice value:

₹23,600

The GST e-invoice system separately reports CGST and SGST/UTGST where applicable.

What Is CGST?

CGST stands for Central Goods and Services Tax.

For an applicable intra-State taxable supply, CGST is charged along with SGST/UTGST.

For example, with an 18% total GST rate:

CGST = 9%

SGST = 9%

Together:

9% + 9% = 18%

What Is SGST?

SGST stands for State Goods and Services Tax.

It applies to the State portion of GST for an applicable intra-State supply.

For an 18% GST rate:

CGST = 9%

SGST = 9%

Total:

18%

What Is IGST?

IGST stands for Integrated Goods and Services Tax.

It is generally applicable to inter-State taxable supplies and certain other transactions covered by the IGST framework.

For example, if the applicable GST rate is:

18%

the IGST rate can be:

18%

rather than splitting it into 9% CGST and 9% SGST.

The official GST e-invoice system states that for taxable supplies, either IGST or CGST plus SGST/UTGST is reported.

CGST + SGST Example

Suppose:

Taxable value:

₹1,00,000

GST rate:

18%

For an applicable intra-State transaction:

CGST:

9%

SGST:

9%

CGST amount:

₹1,00,000 × 9%

= ₹9,000

SGST amount:

₹1,00,000 × 9%

= ₹9,000

Total GST:

₹18,000

Final price:

₹1,18,000

IGST Example

Suppose:

Taxable value:

₹1,00,000

GST rate:

18%

For an applicable inter-State transaction:

IGST:

18%

IGST amount:

₹1,00,000 × 18%

= ₹18,000

Final amount:

₹1,18,000

GST Rate Calculator

A GST Calculator can be used with different applicable rates.

For example:

Taxable Value	GST Rate	GST Amount	Final Price
₹10,000	5%	₹500	₹10,500
₹10,000	12%	₹1,200	₹11,200
₹10,000	18%	₹1,800	₹11,800
₹10,000	28%	₹2,800	₹12,800

The correct rate depends on the product or service being supplied.

How to Remove GST From a Price

Suppose the final price already includes 18% GST.

Final price:

₹59,000

To find the GST-exclusive price:

Taxable Value = Inclusive Price × 100 ÷ (100 + GST Rate)

Therefore:

₹59,000 × 100 ÷ 118

= ₹50,000

GST:

₹59,000 − ₹50,000

= ₹9,000

GST Inclusive Calculator Example

Suppose a product is advertised at:

₹23,600 including 18% GST

Taxable value:

₹23,600 × 100 ÷ 118

= ₹20,000

GST:

₹23,600 − ₹20,000

= ₹3,600

Therefore:

• Taxable price = ₹20,000
• GST = ₹3,600
• Final price = ₹23,600

GST Calculator for 5%

Suppose the taxable price is:

₹40,000

GST rate:

5%

GST:

₹40,000 × 5%

= ₹2,000

Final price:

₹42,000

GST Calculator for 12%

Suppose:

Taxable value:

₹40,000

GST:

12%

GST amount:

₹40,000 × 12%

= ₹4,800

Final amount:

₹44,800

For an applicable intra-State supply, this could be:

• CGST = 6%
• SGST = 6%

GST Calculator for 18%

Suppose:

Taxable value:

₹40,000

GST:

18%

GST amount:

₹40,000 × 18%

= ₹7,200

Final price:

₹47,200

For an applicable intra-State transaction:

• CGST = ₹3,600
• SGST = ₹3,600

For an applicable inter-State transaction:

• IGST = ₹7,200

GST Calculator for 28%

Suppose:

Taxable value:

₹40,000

GST:

28%

GST amount:

₹40,000 × 28%

= ₹11,200

Final amount:

₹51,200

The 28% rate applies only to supplies that fall within the applicable GST classification.

GST on Discounted Price

If a discount is given before GST is calculated, GST is generally calculated on the applicable taxable value after considering the discount according to the GST valuation rules.

For example:

Original price:

₹50,000

Discount:

₹5,000

Taxable value:

₹45,000

At 18% GST:

₹45,000 × 18%

= ₹8,100

Final amount:

₹53,100

The actual GST treatment of discounts can depend on the circumstances and applicable rules.

GST on Invoice

A GST invoice can show details such as:

• Taxable value
• GST rate
• CGST
• SGST/UTGST
• IGST
• Cess
• Other applicable charges
• Total invoice amount

The official GST e-invoice system identifies taxable value and the applicable GST components separately. 

GST Calculator for Business

Businesses can use a GST Calculator to quickly check invoice values.

It can help with:

• Product pricing
• Service invoices
• Customer quotations
• GST-inclusive prices
• GST-exclusive prices
• CGST and SGST
• IGST
• Basic invoice checking

However, a calculator does not replace GST accounting or return filing.

GST Calculator for Shopkeepers

A shopkeeper can use the calculator to determine the final selling price.

For example:

Product price:

₹2,000

GST:

18%

GST:

₹360

Selling price including GST:

₹2,360

This makes it easier to communicate the final price to customers.

GST Calculator for Freelancers

Freelancers who are required to charge GST can use a GST Calculator to estimate the tax component of an invoice.

For example:

Service fee:

₹75,000

GST:

18%

GST:

₹13,500

Invoice total:

₹88,500

Whether GST registration and charging GST are applicable depends on the person’s circumstances and the GST rules.

GST Calculator for Services

GST can apply to taxable services at the applicable rate.

For example:

Service value:

₹1,20,000

GST:

18%

GST:

₹21,600

Total:

₹1,41,600

The actual rate depends on the classification of the service.

GST Calculator for Products

For a taxable product:

Product value:

₹25,000

GST:

18%

GST:

₹4,500

Final price:

₹29,500

The applicable GST rate should always be verified for the particular product.

GST and Input Tax Credit

Businesses registered under GST may be able to claim Input Tax Credit (ITC) on eligible purchases, subject to the applicable GST rules and conditions.

This is different from simply subtracting the GST on purchases from the GST on sales without checking eligibility.

A GST Calculator normally calculates the tax amount but does not determine whether a particular purchase qualifies for ITC.

Output GST and Input GST

Output GST

GST collected or payable on taxable outward supplies.

Input Tax Credit

Eligible GST paid on business purchases that can potentially be used according to the GST credit rules.

The net GST payable can depend on eligible ITC and other adjustments.

GST Payable Example

Suppose:

Output GST:

₹50,000

Eligible ITC:

₹30,000

Potential net GST payable:

₹20,000

This is a simplified example. Actual GST liability depends on applicable credit rules, ledgers, reversals, adjustments, and other provisions.

GST and Cess

Some goods or transactions may have an applicable cess in addition to GST.

The official GST e-invoice system includes fields for cess and state cess where applicable. 

Therefore, the final invoice amount can sometimes be more than:

Taxable Value + GST

if a separate applicable cess or charge is present.

GST Calculator Formula Summary

GST Added to Price

GST = Price × GST Rate ÷ 100

Final Price

Final Price = Price + GST

Taxable Value From GST-Inclusive Price

Taxable Value = Inclusive Price × 100 ÷ (100 + GST Rate)

GST From Inclusive Price

GST = Inclusive Price × GST Rate ÷ (100 + GST Rate)

Intra-State 18% GST

CGST = 9%

SGST = 9%

Inter-State 18% GST

IGST = 18%

The actual tax structure depends on the applicable supply and GST rules.

How to Use the GST Calculator

Step 1: Enter the Price

Enter the product or service value.

Step 2: Select GST Rate

Choose the applicable GST percentage.

Step 3: Select GST Type

Choose whether the entered amount is:

• GST exclusive
• GST inclusive

Step 4: Calculate

The calculator shows:

• GST amount
• Taxable value
• Final price
• CGST
• SGST
• IGST

Step 5: Check the Result

Compare the result with your invoice or quotation.

Common GST Calculation Mistakes

Adding GST Twice

If a price already includes GST, do not add GST again.

Using the Wrong GST Rate

GST rates differ by product and service.

Confusing CGST and IGST

CGST + SGST/UTGST generally applies to an applicable intra-State supply, while IGST generally applies to an applicable inter-State supply.

Calculating GST on the Wrong Amount

Discounts and other valuation rules can affect the taxable value.

Assuming Every Business Charges GST

GST registration and tax collection depend on applicable rules and circumstances.

Ignoring Cess

Some supplies can have an applicable cess.

Frequently Asked Questions

What is a GST Calculator?

A GST Calculator calculates the GST amount, taxable value, CGST, SGST, IGST, and final price based on the information entered.

How do I calculate GST?

Multiply the taxable amount by the GST rate and divide by 100.

How do I calculate GST on ₹10,000 at 18%?

GST:

₹10,000 × 18%

= ₹1,800

Final price:

₹11,800

How do I remove 18% GST from ₹11,800?

Taxable value:

₹11,800 × 100 ÷ 118

= ₹10,000

GST:

₹1,800

What is CGST?

CGST is Central Goods and Services Tax. It forms part of GST on applicable intra-State supplies.

What is SGST?

SGST is State Goods and Services Tax. It forms the State portion of GST on applicable intra-State supplies.

What is IGST?

IGST is Integrated Goods and Services Tax and generally applies to taxable inter-State supplies and certain other transactions covered by the IGST framework.

What is the difference between CGST and SGST?

For an applicable intra-State supply, GST is generally divided between CGST and SGST/UTGST.

What is the difference between CGST and IGST?

CGST is one component of an applicable intra-State GST transaction, while IGST is generally charged on an applicable inter-State supply.

Is GST calculated on the discounted price?

GST valuation can take eligible discounts into account according to the applicable rules and circumstances.

Can I calculate GST from an inclusive price?

Yes. The GST Calculator can reverse-calculate the taxable value and GST from a GST-inclusive amount.

Can a GST Calculator calculate CGST and SGST?

Yes. For an applicable intra-State supply, the calculator can split the total GST into CGST and SGST/UTGST.

Can a GST Calculator calculate IGST?

Yes. For an applicable inter-State transaction, the calculator can calculate the IGST amount.

Does GST include cess?

Not necessarily. Cess can be an additional component where applicable.

Can businesses use a GST Calculator?

Yes. Businesses can use it for basic invoice and pricing calculations.

Does a GST Calculator calculate Input Tax Credit?

A basic GST Calculator calculates GST amounts. It does not determine whether a particular purchase qualifies for ITC.

Is the GST Calculator accurate?

The mathematical calculation is accurate based on the entered rate and amount. However, the applicable GST rate, valuation rules, ITC eligibility, exemptions, and other legal requirements must be determined separately.

Is the GST Calculator free?

Yes. The CalculatorGuides.com GST Calculator is free to use.

GST Calculator – Important Things to Check

Before using the result for an actual invoice, check:

• Correct product or service classification
• Applicable GST rate
• GST-inclusive or exclusive price
• Place of supply
• Intra-State or inter-State treatment
• CGST/SGST or IGST
• Eligible discounts
• Cess, if applicable
• Other invoice charges
• Input Tax Credit eligibility

For business compliance, always verify the current GST rules and your specific tax position.

Conclusion

A GST Calculator makes it easy to calculate GST without doing the mathematics manually.

You can use it to find the GST amount on a product or service, calculate the final price, remove GST from an inclusive price, and understand the difference between CGST, SGST, and IGST.

For example, an 18% GST rate on a taxable value of ₹10,000 produces ₹1,800 GST and a final price of ₹11,800. For an applicable intra-State supply, that 18% can generally be split into 9% CGST and 9% SGST. For an applicable inter-State supply, the 18% can generally be charged as IGST.

The official GST e-invoice system confirms that taxable value and the applicable IGST or CGST plus SGST/UTGST components are reported separately, with cess and other applicable amounts handled separately. 

Use the CalculatorGuides.com GST Calculator to quickly check prices, invoices, GST-inclusive amounts, and GST-exclusive amounts. For actual GST compliance, always verify the applicable rate and rules for the specific product, service, and transaction.