TNEB Bill Calculator 2026
Use this free TNEB Online Bill Calculator to check your domestic or commercial electricity charges based on the latest TANGEDCO tariff rates and the expanded 200 units free government subsidy.
What is the TNEB Bill Calculator 2026?
Let’s be honest—figuring out your EB bill in Tamil Nadu can feel like solving a complex math puzzle. With telescopic rates, subsidy slabs, and the latest policy updates, trying to calculate the amount manually is headache-inducing.
That is exactly why we built this free, super-fast TNEB Bill Calculator (widely used as the go-to EB bill calculator in Tamil Nadu). Whether you are running a standard household (LT-IA Domestic), a home handloom, or bulk residential complexes, our smart calculation engine computes your charges instantly with 100% mathematical accuracy. We keep our formulas strictly updated as per the official TNERC Tariff Order 6 rules of 2025 and the newly expanded May 10, 2026 government subsidy orders.
TNEB Domestic Slab Rates at a Glance (2026)
TANGEDCO billing uses a telescopic system. The unit rate you pay increases as your total consumption crosses higher slabs. To help you understand how your EB card reading turns into your bill amount, here is the official bi-monthly domestic tariff slab structure:
| Bi-Monthly Consumption Range | Subsidized Units | EB Unit Rate (₹ / kWh) | Fixed Connection Charge |
|---|---|---|---|
|
Up to 500 Units Total (Highly Subsidized Range) |
First 200 Units FREE |
201 – 400 Units: ₹4.95 401 – 500 Units: ₹6.65 |
₹0.00 (Waived) |
|
Above 500 Units Total (Standard Telescopic Range) |
First 100 Units FREE |
101 – 400 Units: ₹4.95 401 – 500 Units: ₹6.65 501 – 600 Units: ₹8.80 601 – 800 Units: ₹9.95 801 – 1000 Units: ₹11.05 1001+ Units: ₹12.15 |
₹0.00 (Waived) |
The 500-Unit “Saving Cheat Code” You Must Know!
Have you noticed how your EB bill suddenly inflates if your reading crosses 500 units by even 1 single unit (like 501 units)? This happens because crossing 500 units triggers two heavy penalty rules:
How to Check and Calculate Your TNEB EB Bill Online
Using our online EB bill calculator is as simple as it gets. You do not need to do any complex manual math. Just follow these 4 simple steps to calculate your bi-monthly EB bill:
Read Your White Meter Card
Go to your physical digital meter or open your white EB card. Subtract your “Previous Reading” from the “Current Reading” to find the exact units consumed.
Select Consumer Category
Pick your specific connection category from the calculator dropdown. Most homes fall under the default LT-IA – Domestic (Home) connection.
Key in Consumed Units
Type the consumed units (for example: 350) inside the “Units Consumed” numeric box. Make sure there are no spaces or special characters.
Hit “Calculate” & View Report
Click the purple “Calculate Bill” button. A premium, ultra-compact glassmorphic popup modal will instantly show your itemized slab-wise bill report!
Tamil Nadu Electricity Board Quick Resources Hub
To make things even easier, we have put together all the critical TANGEDCO EB tools and guides in one single place. Click on any card below to navigate directly to our comprehensive resource pages:
Commercial Calculator
Calculate business/shop bills, industrial rates, and demand charges.
Solar Bill Calculator
Analyze solar generation, net billing credits, and network charges.
TNEB Tariff Slabs
Check complete updated bimonthly energy and load rate slabs.
Power Cut Today
Verify live scheduled substation maintenance outages today.
Shutdown Tomorrow
Check tomorrow’s announced TANGEDCO power cut areas and times.
Chennai Power Cuts
Verify live scheduled today & tomorrow power cuts in Chennai neighborhoods.
5 Practical EB Saving Habits to keep usage under 500 Units
Since crossing 500 units drastically increases your bill, keeping your bi-monthly usage around 450–490 units is the smartest way to save thousands of rupees. Here are 5 practical, easy habits to achieve this:
- Set AC Temperature to 24°C – 26°C: Running your AC at 18°C makes the compressor work continuously, consuming huge power. Setting it to 24°C with a ceiling fan is highly comfortable and saves up to 25% on AC running costs.
- Monitor the White EB Card mid-cycle: Do not wait for the EB reader to visit on the 60th day. Take your own reading on the 30th day. If you see you have crossed 230 units, cut back on heavy appliance usage (geysers, ACs) for the next few weeks to safely stay below 500 units.
- Switch entirely to LED Bulbs: Replace any remaining old filament bulbs or fluorescent tube-lights with modern energy-efficient LED lights. A 9W LED bulb gives better light than a 60W traditional bulb at a fraction of the electricity.
- Unplug Idle Appliances: Electronics left on “standby mode” (TVs, chargers, microwave ovens) still consume a tiny amount of continuous power, known as vampire load. Turn off the main switch when not in use.
- Service heavy appliances annually: A dusty AC filter or a scaling water geyser heater has to work twice as hard to perform, drawing extra current. Get your AC serviced before the hot summer months arrive.
Frequently Asked Questions (FAQ)
Have quick questions about domestic EB billing, telescopic slabs, or the free electricity subsidy? We have got you covered with direct, helpful answers:
1. Is the first 200 units of electricity 100% free in Tamil Nadu?
Yes, absolutely! As per the expanded government subsidy orders active since May 10, 2026, if your total bi-monthly consumption is 500 units or below, the first 200 units are completely free (₹0.00 charge).
However, if your bi-monthly usage exceeds 500 units (even by just 1 unit, e.g., 501 units), your free subsidy drops to the standard 100 units free, and the remaining 401 units are billed at standard telescopic rates.
2. How does TANGEDCO calculate telescopic slabs for usage above 500 units?
TANGEDCO uses a telescopic billing method. This means your consumption is broken down into separate rate slabs. For example, if you consume 550 units total:
- First 100 Units: FREE (₹0.00)
- 101 to 400 Units (300 units): Billed at ₹4.95 / unit
- 401 to 500 Units (100 units): Billed at ₹6.65 / unit
- 501 to 550 Units (50 units): Billed at ₹8.80 / unit
Our calculator automatically does all this math behind the scenes and shows you the itemized sum in your report.
3. Do renters or tenant houses get the 200 units free electricity subsidy?
Yes. The subsidy is linked directly to the physical service connection number (meter), not the ownership of the property. As long as the rental portion has a separate independent TNEB domestic meter and the bi-monthly usage stays under 500 units, the tenant will get the full benefit of the 200 free units.
4. Can I calculate commercial shop or industrial bills on the homepage?
The homepage calculator is exclusively optimized for **Domestic (LT-IA) connections** to keep it simple for residential users.
If you want to calculate bills for a shop, office, cottage industry, power loom, or construction site, please navigate to our dedicated **Commercial EB Bill Calculator** page. It includes full options for fixed demand load charges, multi-tier slab rates, and the 5% electricity tax.