How to Calculate Electricity Bill (Step-by-Step Guide 2026)
Calculate your electricity bill in 3 steps — read the meter, calculate units consumed (kWh), and multiply by the tariff rate. Learn the formula, slab charges, fixed charges, and how to calculate your electricity bill online. Additionally, we will highlight how the Bajaj Pay Platform simplifies electricity bill payments.
To calculate your electricity bill, subtract the previous meter reading from the current reading to find units consumed (kWh), then multiply the units by your tariff rate and add fixed charges and electricity duty.
Formula: Electricity Bill = (Units Consumed × Tariff Rate) + Fixed Charges + Electricity Duty
For example, if your previous reading was 1,200 kWh and the latest reading is 1,400 kWh, your total consumption is 200 units. If the tariff rate is Rs. 6 per unit, the energy charge becomes Rs. 1,200 before adding applicable charges.
You can also use an online light bill calculator for faster estimation and then pay instantly using Bajaj Pay.
How to calculate electricity bill: Step-by-step process (Manual and Online)
Follow these steps to calculate the electricity bill accurately:
1. Read the electricity meter
Note the previous month’s and current month’s meter readings from your electricity meter. Most digital meters display electricity consumption in kilowatt-hours (kWh).
2. Calculate electricity consumption
Subtract the previous meter reading from the current reading.
Formula:
Units Consumed = Current Reading – Previous Reading
Example:
1,400 kWh – 1,200 kWh = 200 units consumed.
3. Check your electricity tariff
Visit your DISCOM or electricity board website to check the latest tariff rates applicable to your category.
Tariff rates may vary based on:
- Domestic connection
- Commercial connection
- Industrial connection
- State electricity board
4. Calculate energy charges
Multiply the total units consumed by the tariff rate.
Formula:
Electricity Cost = Units Consumed × Tariff Rate
Example:
200 units × Rs. 6 = Rs. 1,200
5. Add fixed charges and other levies
Apart from unit consumption charges, electricity bills may include:
- Fixed or service charge
- Electricity duty
- Fuel and power purchase cost adjustment (FPPCA)
- Meter rent
Electricity supply in India is generally exempt from GST. However, some bundled private services may include applicable taxes.
Please verify the latest tariff rules and charges with your state electricity board before calculating your final payable amount.
Calculate electricity bill amount manually
Let’s illustrate the process with an example:
- Previous month’s metre reading: 1200 kWh
- Current month’s metre reading: 1400 kWh
- Energy consumption: 200 kWh (1400 - 1200)
- Tariff rate: Rs. 6 per kWh
- Total energy consumption cost: Rs. 200 x 6 = Rs. 1200
Common terms used for calculating electricity bill
Before diving into the calculation process, let us familiarise ourselves with some essential terms:
Term | Description |
Meter reading | Recorded electricity consumption in kilowatt-hours (kWh) from your electricity meter. |
Tariffs | Electricity prices based on region and service provider, varying for residential, commercial, and industrial users. |
Energy consumption | Total electricity used during a billing cycle, measured in kilowatt-hours (kWh). |
Bajaj Finance BBPS Platform: Simplifying electricity bill payments
The Bajaj Finance Bajaj Pay Platform offers a convenient way to pay electricity bills online.
Here is how it makes the process easier:
- Safe and Secure: The Bajaj Pay platform ensures robust security for your payment details. Your transactions are protected, providing peace of mind.
- Instant Payment: The Bajaj Finance Bajaj pay platform ensures quick and seamless transactions without technical glitches.
- Multiple Payment Channels: Choose from debit cards, credit cards, net banking, e-wallets, or UPI for payment.
- Easily Accessible: Pay your electricity bill anytime, anywhere hassle-free.
Steps to pay electricity bill online on Bajaj Finance
You can pay your APDCL electricity bill on the Bajaj Finance website:
- Visit the Bajaj Finance website
- Go to the ‘ELECTRICITY BILL PAYMENT’ under the ‘PAYMENTS’ section
- Click on ‘PAY NOW’
- Select ‘ASSAM POWER DISTRIBUTION COMPANY LIMITED (APDCL)’ as your electricity board from the drop-down menu
- Enter your ‘CONSUMER NUMBER’ and click on ‘FETCH BILL'
- Select a payment method from the list of available payment options such as credit card, debit card, UPI, e-wallets, and net banking
- After choosing your preferred payment mode, enter the requested payment details
- Check the details you entered and click on 'PAY NOW’
Light bill calculator: How to calculate your electricity bill online
A light bill calculator helps you calculate electric bill online instantly by entering your electricity units and tariff rate.
Follow these steps:
- Open a light bill calculator online
- Enter electricity consumption in kWh
- Enter your unit tariff rate
- Add fixed charges if applicable
- Click on calculate to view the estimated bill amount
Exact slab rates vary depending on your electricity board and consumer category. Always use the latest tariff applicable to your state DISCOM.
Calculate electricity bill amount manually
Example calculation:
- Previous meter reading: 1,200 kWh
- Current meter reading: 1,400 kWh
- Energy consumption: 200 kWh
- Tariff rate: Rs. 6 per kWh
Calculation:
200 × Rs. 6 = Rs. 1,200
Add applicable fixed charges and electricity duty to estimate the final electricity bill amount.
How slab-wise electricity tariff is calculated
Most electricity boards in India follow slab-based billing. Different unit slabs are charged at different tariff rates.
Illustrative example:
Units consumed | Tariff rate |
0–100 units | Rs. 4.50 |
101–200 units | Rs. 6 |
201–300 units | Rs. 7 |
If total monthly consumption is 250 units:
- First 100 units = 100 × 4.5 = Rs. 450
- Next 100 units = 100 × 6 = Rs. 600
- Remaining 50 units = 50 × 7 = Rs. 350
- Total energy charge = Rs. 1,400
Actual slab rates differ across states and electricity boards. Please verify current tariffs before calculation.
Common terms used for calculating electricity bill
Term | Description |
Meter reading | Recorded electricity consumption in kilowatt-hours (kWh) |
Tariffs | Electricity prices based on region and consumer category |
Energy consumption | Total electricity used during a billing cycle |
Fixed charge | Monthly service charge applied irrespective of usage |
Electricity duty | State government levy added to electricity bills |
Sanctioned load | Approved electricity load capacity for the connection |
Bajaj Pay: Simplifying electricity bill payments
Bajaj Pay offers a secure and convenient platform for electricity bill payments across multiple electricity boards in India.
Benefits include:
- Safe and secure payments
- Instant payment confirmation
- Multiple payment options
- 24x7 accessibility
- Easy bill fetching using consumer number
Bajaj Pay operates on the BBPS network regulated by RBI and NPCI for secure digital bill payments.
How to pay electricity bill online on Bajaj Pay
Follow these steps to pay your electricity bill online:
- Visit the Bajaj Finance website
- Go to ‘ELECTRICITY BILL PAYMENT’ under the ‘PAYMENTS’ section
- Click on ‘PAY NOW’
- Select your electricity board from the drop-down menu
- Enter your consumer number and click on ‘FETCH BILL’
- Select a payment mode such as debit card, credit card, UPI, wallet, or net banking
- Enter payment details
- Verify the details and click on ‘PAY NOW’
Calculate electricity bill of other electricity providers in India
- TNEB electricity bill calculator
- KSEB electricity bill calculator
- CESC electricity bill calculator
- UPPCL electricity bill calculator
- Torrent electricity bill calculator
- DGVCL electricity bill calculator
- Adani electricity bill calculator
- WBSEDCL electricity bill calculator
- MPEZ electricity bill calculator
Conclusion
Understanding how to calculate electricity bill helps you manage electricity consumption and monthly expenses more efficiently. Whether you calculate manually using meter readings or use a light bill calculator online, knowing the tariff structure and additional charges ensures accurate bill estimation. You can also use Bajaj Pay for secure and convenient electricity bill payments anytime.
Steps for electricity bill payment online through Bajaj Finance platforms
On the Bajaj Finance app
- Download the Bajaj Finance app from the Google Play Store or App Store and install it on your device
- Open the app, log in, or register if you are a new user
- Scroll down to the ‘Bills and recharges’ section and click on ‘Electricity’
- Select/search for your electricity provider
- Enter the requested details like Service/Consumer Number and City/Sub division code
- Click on ‘PROCEED’, your total bill amount will be shown
- Click on ‘PROCEED TO PAY’ and choose your preferred mode of payment
- Once you have completed the transaction, you will get notified that the payment was successful
On the Bajaj Finance website
- Go to the Bajaj Finance website
- Scroll down to the ‘Bills and recharges’ section, click on 'Electricity’
- Enter your mobile number and login with an OTP
- Select/search for your electricity provider
- Enter the requested details like Service/Consumer Number and City/Sub division code
- Click on ‘PROCEED’,
- Your total bill amount will be shown, click on ‘PROCEED TO PAY’ to choose your preferred mode of payment
- Once you have completed the transaction, you will get notified that the payment was successful
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Frequently asked questions
1 unit of electricity equals 1 kilowatt-hour (kWh). It means using a 1,000-watt appliance for 1 hour.
Subtract the previous meter reading from the current reading to calculate total units consumed. Multiply the units by the tariff rate and add fixed charges.
Electricity Consumption (kWh) = Current Meter Reading – Previous Meter Reading
Check the latest and previous readings from the electricity meter and calculate the difference to determine total units consumed.
Electricity bills may include fixed charges, electricity duty, FPPCA or fuel surcharge, and meter rent. Electricity supply itself is generally exempt from GST in India.
No. Electricity supplied by DISCOMs is generally exempt from GST under current regulations. Some bundled private services may separately attract GST.
The EB bill in Tamil Nadu is calculated using slab-wise TNEB/TANGEDCO tariff rates multiplied by units consumed, along with applicable fixed charges.
1 unit equals 1 kilowatt-hour (kWh), which means consuming 1,000 watts of power for 1 hour.
You can reduce electricity usage by using BEE 5-star appliances, switching off standby devices, monitoring monthly units consumed, and optimising sanctioned load.
You can pay electricity bills online through Bajaj Pay using UPI, debit card, credit card, wallet, or net banking.
