Global calculator · Energy bills & appliances

Singapore Electricity & Water Bill Calculator

Singapore utility bills combine electricity, domestic water and other account lines. Enter previous and current readings to calculate billed kWh and cubic metres, or use zero as the previous reading when you already know the billed usage. The default regulated electricity rate is the official Q3 2026 household rate before GST; the water schedule is effective from 1 April 2025. Every effective date and component is visible, while gas, refuse, retailer fees, rebates, arrears and account adjustments stay outside the estimate unless you enter them.

No account Formula visible Your rate and units
Use your evidence

What to have beside you

Use the current bill or tariff sheet, exact product label, location-specific solar estimate, or measured project dimensions. Example physical values teach the tool; zero money rates prevent an unsourced price from becoming a default claim.

SGSingapore
Official rate snapshot · reviewed 20 August 2026

Singapore household utility-rate snapshot

The regulated electricity rate applies from 1 July to 30 September 2026. Water prices shown are the domestic schedule effective from 1 April 2025. All component rates below are before 9% GST.

Dated rates
ComponentRateEffectiveStatusOfficial source
Regulated electricityS$0.3191/kWh before GST1 Jul–30 Sep 2026currentSP Group
Domestic water — first 40 m³S$3.24/m³ before GSTFrom 1 Apr 2025currentPUB, Singapore's National Water Agency
Domestic water — above 40 m³S$4.39/m³ before GSTFrom 1 Apr 2025currentPUB, Singapore's National Water Agency
Previous regulated electricityS$0.2727/kWh before GST1 Apr–30 Jun 2026historicalSP Group
Practice with evidence

Load a complete example

Reference scenarios are dated where official comparison data exists. Illustrative scenarios are never presented as a household average.

Meter to bill

Follow the bill in order

  1. 01Check whether each bill reading is actual or estimated and keep the same billing period.
  2. 02Subtract the previous electricity reading from the current reading to obtain billed kWh.
  3. 03Subtract the previous water reading from the current reading to obtain billed cubic metres.
  4. 04Use the electricity rate covering that period; replace the regulated default for a retailer plan.
  5. 05Allocate domestic water through the 40 m³ threshold, then add GST.
  6. 06Reconcile gas, refuse, retailer fees, U-Save rebates, arrears and credits separately.
Not silently included

Reconcile these separately

  • Gas and refuse charges
  • Retailer-specific fees
  • U-Save rebates and other credits unless entered
  • Deposits, arrears and account adjustments
Rate changelog

Q3 electricity snapshot verified31.91 cents/kWh before GST; 34.78 cents/kWh including 9% GST.

Q3 regulated tariff beganThe household electricity tariff replaced the Q2 2026 rate of 27.27 cents/kWh before GST.

Current domestic water schedule beganThe total pre-GST water price became S$3.24/m³ for the first 40 m³ and S$4.39/m³ above 40 m³.

01

Enter your details

Your values

Every input includes a simple explanation.

Simple wordsFormula shownPrivate inputs
Try a complete bill exampleDated references and illustrative practices are labelled separately.
Simple viewUsing editable example assumptions for technical settings.

Private: calculations run in your browser; a saved scenario stays on this device.

What the result means

Use it as a scenario

The estimate uses the displayed official schedules and entered values. Retailer contracts, gas, refuse, rebates, arrears, deposits and account adjustments can change the final SP Services bill.

The dated HDB 4-room comparison inputs of 369 kWh and 14.7 m³ produce an electricity-and-water estimate using the current displayed schedules; they are a reference, not a prediction for a household.

What can change

Check before deciding

  1. 01Match the electricity rate to the exact billing period and retailer plan.
  2. 02Check whether the bill reading is actual or estimated and reconcile other SP bill lines separately.
Formula and context sources

Verify this calculation

Source links establish context or measurement relationships. Your personal rate and project values remain your inputs.

Singaporebills

Q3 2026 regulated electricity tariff

SP Group

Official Q3 2026 household regulated electricity tariff and component breakdown.

Open official resource
Singaporebills

Q2 2026 regulated electricity tariff

SP Group

Official previous-quarter rate used only for the visible tariff changelog.

Open official resource
Singaporebills

Singapore domestic water price

PUB, Singapore's National Water Agency

Official domestic potable-water components and the 40 cubic metre threshold.

Open official resource
Singaporebills

Current GST rates

Inland Revenue Authority of Singapore

Official confirmation of Singapore's current nine percent GST rate.

Open official resource
Singaporebills

Understanding your utilities bill

SP Group

Official guide to the readings, usage and account lines shown on an SP utilities bill.

Open official resource
Singaporeconsumer

Average household electricity consumption

SP Group

Official comparison dataset used for clearly dated HDB electricity reference scenarios.

Open official resource
Singaporeconsumer

Average household water consumption

SP Group

Official comparison dataset used for clearly dated HDB water reference scenarios.

Open official resource
Plain-language guides

Read before you decide

Continue the decision

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Written and maintained by Tilock SadhukhanReviewed 20 August 2026Version 1.0