Total Cost of Ownership Calculator

This calculator builds a gross registration-cost estimate from OMV and COE, then adds the running-cost inputs for the selected period. It covers petrol cars during their first ten-year COE term. All tax bands, excise, import GST and registration fees come from the shared effective-dated database catalog.

excise = OMV × excise_rate
import_GST = (OMV + excise) × GST_rate
upfront = OMV + excise + import_GST + gross_ARF + COE + registration_fee
annual_running = road_tax + insurance + maintenance + 12 × (petrol + parking + ERP)
gross_cost = upfront + annual_running × years

This is not a dealer quote. Dealer margin, fees and retail GST on additional charges are excluded, as are emissions surcharges or rebates. Do not add a showroom price to this calculated upfront amount: that would count purchase components twice.

Fuel, insurance and maintenance are your estimates. Selecting a petrol model copies its catalog assumptions; it does not overwrite your fuel budget. Future costs and tax rates are held constant.

Sources: LTA vehicle tax structure and Singapore Customs import GST calculation.

With OMV S$25,000, COE S$100,000, a 1,600 cc engine and the default running costs, the shared service calculates upfront costs of S$160,050, including S$2,700 import GST. Annual running costs are S$9,443, giving S$254,480 gross spend over 10 years.

Financing interest, emissions adjustments, dealer charges, resale proceeds and deregistration rebates are excluded. There is no depreciation or residual-value model in this gross-spend total. The horizon stops at ten years because COE renewal and age surcharges would require additional inputs. EVs and hybrids are outside this petrol-only tool; compare actual EV and petrol quotes with the EV vs Petrol calculator.

Does this total include finance interest and resale value?

No. It estimates gross registration and running spend. Financing interest, dealer charges, emissions adjustments and disposal proceeds are excluded.

How is import GST calculated?

The shared service applies the current GST rate to OMV plus excise duty. It does not estimate retail GST on additional dealer charges.

Does the model preset support electric cars?

No. Presets here are restricted to petrol cars so an electric car cannot receive a petrol road-tax estimate. Use the separate EV vs Petrol calculator for an electric vehicle.