Every line on your electricity bill, explained
Energy charge, demand charge, meter rent, VAT, rebate and late fee — what each line actually pays for, how it is calculated, and which ones you can realistically reduce.
Most people read exactly one number on their electricity bill: the total. That is understandable, but it hides the fact that a bill is built from several very different components — some driven entirely by your behaviour, some fixed by the terms of your connection, and some set by law and untouchable. Knowing which is which tells you where effort is worth spending and where it is wasted.
The anatomy of a bill
| Line | What it pays for | How it is calculated | How much you control it |
|---|---|---|---|
| Energy charge | The electricity you actually consumed, priced through the slab structure for your category. | Units (kWh) × the rate for each slab the units fall into | High — this is the line your habits move |
| Demand charge | A fixed monthly charge for the capacity reserved for your connection, whether you use it or not. | Sanctioned load (kW) × the per-kW rate for your category | Medium — only by revising sanctioned load |
| Meter rent | A small recurring charge for the metering equipment installed at your premises. | Fixed per month, varying by meter type and phase | Low — effectively fixed |
| VAT | Value added tax applied on the billed supply, as required by law. | A percentage of the chargeable amount | None — statutory |
| Rebate | A discount applied when payment is made within the due window. | A small percentage of the bill | High — pay on time and it is automatic |
| Late payment surcharge | A penalty applied when the bill is settled after the due date. | A percentage of the outstanding amount | High — entirely avoidable |
| Arrears / adjustment | Unpaid balance carried forward, or a correction for a previously estimated reading. | Prior-period balance or the difference against an actual reading | Medium — avoid estimated readings where possible |
Energy charge: why the slabs matter more than the average rate
Residential supply in Bangladesh is billed in slabs, not at a single flat rate. Your first block of units is priced at the lowest rate, the next block a little higher, and so on. This is the source of the most misunderstood behaviour on a bill: the last hundred units you consume in a heavy month cost noticeably more per unit than the first hundred. It is also why a twenty-percent rise in consumption can produce a rise in the bill that feels disproportionate — because the additional units land in a higher slab.
The practical consequence is that saving is worth more at the top of your usage than at the bottom. Trimming the units that push you into the highest slab you reach saves at that slab's rate, not at your average rate. You can see this directly by entering two different unit figures into the bill calculator and comparing the totals.
Demand charge: the cost of capacity you may not be using
Demand charge is billed against your sanctioned load — the capacity your connection is approved to draw — rather than what you actually consumed. A household that had a large load sanctioned years ago for equipment it no longer runs keeps paying for that headroom every month. It is a genuinely fixed cost in the short term, but not a permanent one: sanctioned load can be revised through the distributor. Our demand charge explainer covers when that is worth pursuing and when the paperwork outweighs the saving.
Rebate and late fee: the same money, twice
These two lines are mirror images. Pay within the due window and a rebate reduces the total; pay after it and a surcharge increases the total. The gap between the two outcomes is larger than most people assume, and it recurs every single month. Of all the lines on a bill, this is the one where a purely administrative habit — a calendar reminder, or an automatic payment instruction — produces guaranteed, effort-free savings. Nothing else on the bill offers a comparable return for so little.
Arrears and estimated readings
An arrears line means a previous bill was not fully settled. An adjustment line usually means a previous bill was based on an estimated rather than an actual meter reading, and the utility is now correcting the difference. Estimated readings are the more insidious of the two: they smooth your consumption artificially for a few months and then deliver the whole correction at once, often landing that catch-up consumption in high slabs. If your bills show "estimated" repeatedly, ask the distributor to ensure the meter is physically read — it is a reasonable request and prevents the shock correction later.
Where to actually spend your effort
Ranked by return: pay on time (guaranteed, monthly, zero effort); reduce the units at the top of your usage curve, which are billed at your highest slab rate; review sanctioned load if it is clearly larger than anything you run; and insist on actual meter readings so corrections never accumulate. VAT and meter rent are not worth thinking about — they are fixed by rule and no household behaviour changes them.
Takeaways
- Energy charge is slab-based, so marginal units cost more than your average rate suggests.
- Demand charge follows sanctioned load, not consumption — review it if it is oversized.
- Rebate versus late fee is the highest-return, lowest-effort line on the bill.
- Repeated estimated readings store up a painful correction; ask for actual readings.
- Reconstruct a suspicious bill before disputing it — most are arithmetically correct.
To see where those units are going in the first place, read which appliances actually drive your bill.