Singapore Road Tax 2026: Calculate Your Annual Cost (with EV Surcharge)

Road tax in Singapore is not a fee — it is a formula. LTA publishes the coefficients, OneMotoring applies them, and the number lands in your inbox whether you wanted it or not. What trips most owners up is not the base rate but the compounding surcharges: the 10%-per-year age penalty that starts at year 11 and caps at 50%, the diesel special tax, the CEVS rebate or penalty embedded in your registration, and the 2024 EV road tax reforms that changed the maths for electric owners mid-life. Miss any of those and you will misquote your own annual bill by 20%–40%.

This guide walks through the 2026 rates, how to renew, what expiry actually costs, whether insurance is truly non-negotiable (yes), and the exact formula LTA uses under the hood. All figures are drawn from LTA's OneMotoring portal and are subject to adjustment within the year — re-verify before signing cheques.

How much is road tax in Singapore?

Road tax in Singapore is calculated on engine capacity (cc) for petrol and diesel cars, and on motor power (kW) for EVs. The formula is tiered, meaning larger engines pay disproportionately more — a 3.0L V6 does not pay twice a 1.5L sedan, it pays roughly four to five times as much. The 2026 rates have not shifted materially from 2025, but the 10-year surcharge and diesel special tax continue to push total annual costs meaningfully higher than the base formula implies.

Here is the indicative annual road tax for common 2026 vehicles before any age surcharge:

Vehicle type	Engine / power	Annual road tax (base)
Compact hatchback	1.0L (998cc)	~$392
Mid-size sedan	1.5L (1,498cc)	~$684
Mid-size sedan	1.6L (1,598cc)	~$744
Mid-size SUV	2.0L (1,998cc)	~$1,210
Executive saloon	3.0L (2,998cc)	~$2,478
Performance SUV	3.5L (3,498cc)	~$3,136
EV (≤90kW)	e.g. compact EV	~$200
EV (123kW)	e.g. Tesla Model 3 RWD	~$1,068 (post-2024 reform)
EV (≥230kW)	e.g. high-performance EV	~$2,300+

Diesel cars pay an additional special tax — roughly 6x the base road tax for Euro VI diesels, higher for older Euro V and below. A 2.0L diesel SUV can end up paying $3,000+/year once all components are added. EV owners benefited from the January 2024 reforms, which narrowed the road-tax gap between EVs and ICE equivalents but did not eliminate it. Use the Road Tax Calculator to plug in your exact engine/kW and year of registration for a precise figure.

How do I renew my road tax?

You renew road tax online via OneMotoring.com.sg using SingPass, and you can do so up to two months before expiry. The process takes under five minutes if your prerequisites are in order — and will fail hard if they are not. Three checks run in the background: motor insurance coverage for the full renewal period, a valid vehicle inspection certificate (mandatory from year 3, then biennial, then annual from year 10), and no outstanding LTA or Traffic Police demands.

The renewal flow:

1. Log in to OneMotoring.com.sg with SingPass
2. Navigate to "Digital Services" → "Road Tax Renewal"
3. Select your vehicle and the renewal period (6 or 12 months)
4. System validates insurance and inspection automatically
5. Pay via credit card, eNETS, or AXS
6. Digital road tax confirmation is issued — no physical disc since 2017

Six-month renewal costs exactly half of the annual rate plus a small admin fee. It makes sense only if you are planning to scrap or export the vehicle within the year. Otherwise, the annual option is more economical and saves the friction of a mid-year repeat. Keep the confirmation email — LTA's systems are authoritative, but a receipt is useful if you are stopped and the enforcement system is slow to sync. If you own multiple vehicles, OneMotoring batches them under one SingPass dashboard.

What happens if my road tax expires?

Driving with expired road tax is an offence under Singapore's Road Traffic Act, and enforcement is automated rather than discretionary. ERP gantries, multi-storey carpark cameras, and Traffic Police patrol cars continuously scan number plates against LTA's live database. You do not need to be stopped — a demand letter arrives at your registered address within days, with a fine that scales by lateness.

Late renewal penalties on top of the road tax itself:

Days expired	Penalty
1–30 days	$10
31–60 days	$50
61–90 days	$80
91+ days	$120+ (up to $250 for cars over 2.0L)

Beyond six months of expiry, LTA treats the vehicle as effectively de-registered. To bring it back on the road you must re-register — paying registration fees and potentially a new COE if the vehicle's COE has also expired concurrently. For a car close to its 10-year mark, this is terminal: re-registration costs will exceed the vehicle's book value. The safer rule is to renew within the two-month pre-expiry window and set a calendar reminder one month before that. First-offence fines for actively driving with expired road tax can reach $2,000; repeat offences escalate to court and potential disqualification.

Can I renew road tax without insurance?

No — valid motor insurance covering the full renewal period is a non-waivable prerequisite. This is not an administrative preference; it is written into the Motor Vehicles (Third Party Risks and Compensation) Act. OneMotoring validates coverage against the General Insurance Association's live database in real time. If your insurer has not uploaded your policy to the GIA system (typically a 24-hour lag after purchase), the renewal will reject your transaction and display an error referencing "insurance not found."

The common pitfalls:

• Insurance expiring mid-road-tax-period. If you renew road tax for 12 months but your insurance only covers 10, the system rejects the transaction. Extend insurance first.
• Switched insurers recently. There is a 24-to-48-hour sync window where the old policy is gone and the new one is not yet live. Wait it out.
• Third-party-only policies. Valid for road tax purposes, but many leasing companies and financed-vehicle loan agreements require comprehensive coverage. Check your loan terms.
• Named-driver-only policies. Fine for road tax; problematic if an unnamed person drives.

If you are caught in a genuine bind — insurance lapsed unexpectedly — buy a new policy online, wait 24 hours, and retry OneMotoring. Do not drive in the interim. Short-term policies (monthly) are available but carry a meaningful premium versus annual coverage.

How is road tax calculated?

Road tax in Singapore is calculated via a tiered formula on engine capacity (cc) for ICE vehicles or motor power (kW) for EVs. The formula has a flat base plus a per-cc (or per-kW) rate that steps up through five bands. The higher the engine, the faster the rate climbs — which is why a 3.0L pays roughly 4x a 1.5L, not 2x.

The 2026 ICE formula (petrol cars, six-month rate, double for annual):

Engine capacity	6-month formula
≤ 600cc	$200 × 0.782
601–1,000cc	($200 + 0.125 × (cc − 600)) × 0.782
1,001–1,600cc	($250 + 0.375 × (cc − 1,000)) × 0.782
1,601–3,000cc	($475 + 0.75 × (cc − 1,600)) × 0.782
> 3,000cc	($1,525 + 1.0 × (cc − 3,000)) × 0.782

The 0.782 multiplier is the current rebate factor applied across the board. Multiply the 6-month figure by 2 for the annual amount. Then apply the age surcharge if the car is past 10 years old:

Vehicle age	Surcharge
Year 11	+10%
Year 12	+20%
Year 13	+30%
Year 14	+40%
Year 15 and beyond	+50%

Worked example — a 1.6L sedan (1,598cc) at year 12:

• Base 6-month: ($250 + 0.375 × 598) × 0.782 = $370.85
• Annual base: $741.70
• Year-12 surcharge (+20%): $741.70 × 1.20 = $890.04

Diesel cars add a special tax on top of this — roughly 6x the base for Euro VI, more for older engines. EVs use an equivalent kW-based formula that was recalibrated in the 2024 reform to narrow the EV/ICE gap while still incentivising electrification for smaller vehicles.

Bottom line

Road tax in Singapore is formulaic but not flat. The base rate is driven by engine size or kW, but the real annual bill depends on three modifiers: age surcharge, diesel special tax, and whether your EV falls into the 2024 reform's higher or lower band. Renewal is frictionless via OneMotoring as long as insurance and inspection are current — and brutal if they are not. The smart move is to set a two-month-before-expiry reminder, verify your insurance covers the full renewal period, and run the numbers through the Road Tax Calculator annually — especially in year 10, when the surcharge begins and changes your total cost of ownership trajectory. For cars approaching COE expiry, pair this analysis with the COE Calculator to see whether the road tax surcharge alone tips the renewal-versus-scrap math.