Car Leasing vs Buying Calculator (Singapore, 2026)
Lease scenario
Buy scenario
Running costs (if not included)
Result summary
| Component | Lease (SGD) | Buy (SGD) | Notes |
|---|
Lease vs buy: how to interpret the result
This calculator compares all‑in cost over the same holding period. Leasing buys flexibility (easy exit, fewer surprises) while buying concentrates cost in depreciation + financing. Don’t compare only monthly payments — compare the total cost and the risk you’re taking.
What to include in leasing costs
- Monthly lease payment
- Upfront deposit / admin fees (if any)
- Items not included (insurance, servicing, tyres, road tax, parking, fuel)
What drives buying costs
- Depreciation (purchase price minus resale value)
- Interest (flat vs effective matters)
- Running costs (insurance, maintenance, road tax, parking, fuel)
Planning example
If the lease looks “only S$X/month more”, check if it includes insurance/servicing. A buy option may look cheaper on paper but can swing the other way after repairs or if resale is worse than expected.
FAQ
Use flat only if your quote is explicitly a flat rate. If you have an APR/effective rate, use effective for a more direct comparison.
Banks may include fees differently, round instalments, or use different compounding conventions. Treat this as a planning model.
Use the period you realistically expect to hold the asset. If unsure, test 3, 5 and 10 years to see sensitivity.
Run a conservative scenario. If the decision still holds, it’s likely robust.
Worked example (detail)
Run one base case and one conservative case. For example, increase the key cost (rate/maintenance/vacancy) by 20% and reduce resale by 10%. If the winner stays the same, your decision is robust.
How to use this calculator well
Use this to compare the total monthly cost of leasing vs buying. The correct comparison is all-in monthly cost plus flexibility value.
- Enter lease monthly price and term.
- Enter buying costs (depreciation/loan, insurance, maintenance).
- Compare total cost and consider flexibility (short-term needs vs long-term).
Scenario library (sanity checks)
Use these simplified scenarios as sanity checks. Replace the numbers with your own situation.
- Example A (short-term need):
Lease: $1,800/mo for 12 months. Buying: higher setup costs. Leasing can be rational for temporary needs.
- Example B (long-term):
Lease: $1,600/mo for 36 months. Buying: $1,300/mo all-in. Over long horizons, buying often wins on cost.
Methodology & assumptions
- Lease packages differ (insurance/maintenance included or not). Match inputs to your lease quote.
- Buying assumes a resale value; test conservative resale.
- Planning model; not advice.
A calculator is most useful when it changes the questions you ask. After getting a result, ask what assumptions matter most, what happens if those assumptions are wrong, and whether the plan still works with slightly worse numbers. A robust decision rarely depends on one perfect estimate.
What the result should make you ask next
The biggest swing factors are holding period, included vs excluded running costs, and realistic resale assumptions. Small changes in those variables can completely flip the result, so do not treat a narrow difference as decisive.
What changes the answer most
- How long do you realistically expect to need the vehicle?
- How much do you value administrative simplicity?
- Would a large unexpected repair or weak resale value bother you more than a fixed lease premium?
- Are your mileage and usage conditions friendly to lease terms?
Practical decision checklist
A lower monthly lease can still be more expensive over your real holding period if you keep renewing leases. A lower monthly buy scenario can also be misleading if you assume resale is strong and maintenance stays flat. This is why the worked example and scenario checks matter: they help you understand whether the result is robust or just optimistic.
Interpretation traps
- You expect to keep the car for years and can spread fixed costs across a longer horizon.
- You want flexibility in mileage, modifications, or exit timing.
- You can manage maintenance and financing choices well.
When buying often wins
- You value simplicity and want predictable monthly outflow.
- You dislike resale risk and do not want to think about disposal or residual value.
- You have a short horizon and do not want to commit to ownership economics.
When leasing often wins
This calculator is useful when you want an apples-to-apples view. It works best when you compare the same vehicle class and the same practical use case. If you lease a new compact car but compare buying a much older or much larger car, the result becomes less informative.
Leasing and buying can look deceptively similar because the monthly figures are easy to compare. But the economics are very different. Leasing wraps several costs into one payment and trades ownership upside for simplicity. Buying creates depreciation risk, financing decisions, and residual-value uncertainty, but it also gives you more control over usage and exit timing.
What this calculator is trying to compare
The aim is not perfection. It is to avoid being surprised by costs you could have anticipated with a slightly better planning process.
- Use a conservative scenario, not only a comfortable scenario.
- Test whether the decision still works if one major assumption worsens.
- Write down what the calculator excludes so you do not treat the result as complete.
- Prefer a slightly pessimistic planning number over an optimistic one.
How to improve the quality of your estimate
- How long you keep the car.
- What happens if resale is weaker than expected.
- Whether your lease really includes the running costs you think it does.
What to stress test
That is why the calculator is best used together with an honest time horizon and an honest description of how you usually make transport decisions.
On paper, leasing and buying can be close. In practice, behaviour decides a lot. Buyers who keep changing cars, underestimate maintenance, or overestimate resale can destroy the theoretical ownership advantage. Lessees who renew premium leases for too long may end up paying a convenience premium far larger than they realise.
Why the answer is often behavioural
Two options can look financially close and still lead to different high-quality decisions because leasing and buying reward different personalities. Buying suits people who value control, stable usage patterns, and long holding periods. Leasing can suit households that prioritise flexibility, dislike repair uncertainty, or are not yet sure what their transport needs will look like in a few years. When the numbers are close, the better answer is often the one that fits your behaviour best.
How to use this result when the gap is small
A narrow calculator difference does not automatically mean the two options are equivalent. It usually means the decision is being driven by non-price frictions: exit flexibility, repair unpredictability, downtime tolerance, and how likely you are to change your transport plan early. In Singapore, that matters because car costs are lumpy. One repair event, one weak resale outcome, or one early exit can overwhelm a small headline advantage.
If buying is only slightly cheaper, ask whether you are being paid enough to accept depreciation risk and a less flexible exit. If leasing is only slightly cheaper, ask whether the quoted package really includes the operating simplicity you think you are getting. A robust answer usually survives three stress tests: a shorter holding period than planned, weaker-than-expected resale, and higher-than-expected running costs.
Decision rule for real households
- Lease is easier to justify when your need is temporary, work location may change, or you expect your household’s transport pattern to shift.
- Buy is easier to justify when you have a stable holding period, can handle maintenance uncertainty, and want more control over exit timing.
- Pause the decision when the result is close and you have not yet priced the behavioural risks properly.
The point of the calculator is not to force one answer. It is to stop you from choosing a structure that only works if nothing inconvenient happens.
One more practical filter: ask whether you are comparing the same operational outcome. A lease that bundles servicing, insurance support, and administrative convenience is not directly comparable to ownership unless you have priced the value of handling those tasks yourself. Likewise, ownership only deserves a cost advantage if you are actually willing to keep the car long enough, maintain it properly, and exit without panic.
References (starting points)
Last updated: 26 Mar 2026