Why is this month's bill so high?

💡 Electricity Bill (EVN)

Enter your kWh, both meter readings or the bill amount to reverse it, see the 5-tier tariff split on a live cost curve, then find out where the kWh go: which tier your air-con, fridge or heater lands in.

Bill vs usage — the curve bends up at each tier
🔌 Where do these kWh go? Devices × hours per day × days in the period, stacked on the tariff

Top of the list eats the cheap tiers, bottom of the list eats the expensive ones; the air-con sits last because it is the part you can cut. Use ▲▼ to reorder, ＋/− for the number of units, the slider for hours.

Tier prices, ₫/kWh before VAT (editable)

Preset prices follow the 5-tier structure of Decision 14/2025/QĐ-TTg (from 29 May 2025) at the average retail price set by Decision 1279/QĐ-BCT (2025), before VAT. Tiers: 0–100, 101–200, 201–400, 401–700, 701+ kWh for a 30-day period; when the meter-reading period differs, each tier quota is scaled by days ÷ 30. VAT 8% is the 2-point cut under Resolution 204/2025/QH15, in force through 31 Dec 2026 (10% otherwise). Device wattages are typical label values (a 1 HP air-con draws 0.75–0.9 kW at full compressor, less once an inverter settles). If EVN adjusts prices again, just edit the boxes above — the whole page recalculates.

Frequently asked questions

How many tiers does the household electricity price have?
From 29 May 2025 the household tariff has 5 tiers under Decision 14/2025/QĐ-TTg, at 100 · 200 · 400 · 700 kWh thresholds; the more you use, the pricier the top portion.
Does the electricity bill include VAT?
The per-tier prices are pre-tax; the actual bill adds 8% VAT. The tool shows the amount both before and after VAT.
How do I know how many kWh I used?
Subtract the start-of-period meter reading from the end-of-period one. The tool accepts a direct kWh figure, two meter readings, or works backwards from the bill amount.