Car Loan EMI Calculator
From car price, down payment, rate and term, compute the loan amount, fixed monthly payment (EMI), total repayment and total interest.
輸入資料
計算結果
重點速覽：Car Loan EMI is the fixed monthly repayment when you finance a car: pay a down payment, borrow the balance, repay by equal monthly instalments (reducing balance). loan = car price - down payment; r = rate/12, n = term x 12; EMI = loan x r(1+r)^n/((1+r)^n - 1). Early payments are mostly interest, later mostly principal. Example: HK$300k price, HK$60k down, 9%, 5y → loan HK$240k, EMI ≈ HK$4,982, interest ≈ HK$58,920. WARNING: Many HK car loans are quoted as 'flat rate' (平息); the same number costs far more than reducing-balance — compare on APR. Excludes fees, insurance, licence, penalties. Education, not advice.
計算公式
貸款金額 = 車價 − 首期 (下限為 0)。
月利率 = 年利率 ÷ 12;期數 = 還款年期 × 12。
每月供款 = 貸款金額 × 月利率 × (1 + 月利率)^期數 ÷ [(1 + 月利率)^期數 − 1];還款總額 = 每月供款 × 期數;總利息 = 還款總額 − 貸款金額。
$$EMI = P \times \dfrac{r(1+r)^{n}}{(1+r)^{n} - 1}, \quad r = \dfrac{\text{annualRate}}{12}, \quad n = \text{years} \times 12$$$$P = \text{CarPrice} - \text{DownPayment}, \quad \text{TotalInterest} = EMI \times n - P$$使用說明
- Enter the car price and the down payment you plan.
- Enter the annual rate and term.
- View the loan amount, monthly payment, total repayment and interest.
不同貸款額於年利率 6% (息隨本減) 下，還款 3／5／7 年的每月供款與總利息對照表
| 貸款額 | 還 3 年 | 還 5 年 | 還 7 年 |
|---|---|---|---|
| HK$100,000 | 月供 HK$3,042／總息 HK$9,519 | 月供 HK$1,933／總息 HK$15,997 | 月供 HK$1,461／總息 HK$22,712 |
| HK$200,000 | 月供 HK$6,084／總息 HK$19,038 | 月供 HK$3,867／總息 HK$31,994 | 月供 HK$2,922／總息 HK$45,424 |
| HK$300,000 | 月供 HK$9,127／總息 HK$28,557 | 月供 HK$5,800／總息 HK$47,990 | 月供 HK$4,383／總息 HK$68,136 |
以等額本息 (息隨本減) 年金公式、年利率 6% 實算，數字四捨五入至整數，僅供參考。香港車貸年利率因應信貸紀錄、車齡與機構而異;若報價為「每月平息 (flat rate)」，實際成本會明顯較高，應統一以實際年利率 (APR) 比較。
理財情境案例
同一筆 20 萬車貸：3 年 vs 5 年，月供少 2,217 但總息多 1.3 萬
以貸款 HK$200,000、年利率 6% (息隨本減) 為例:選 3 年期月供約 HK$6,084、總利息約 HK$19,038;選 5 年期月供降至約 HK$3,867，但總利息升至約 HK$31,994。
還款年期由 3 年拉長至 5 年，每月少供約 HK$2,217、現金流較鬆動，但整段還款期多付利息約 HK$12,956。加上汽車屬貶值資產，年期太長更易出現「欠款高於車價」，建議在負擔範圍內盡量縮短年期。
提高首期：車價 30 萬多付 6 萬首期，總息省近萬元
以車價 HK$300,000、年利率 6%、還 5 年為例:首期 HK$30,000 (貸 HK$270,000) 月供約 HK$5,220、總息約 HK$43,191;若首期提高至 HK$90,000 (貸 HK$210,000)，月供降至約 HK$4,060、總息降至約 HK$33,593。
首期由 HK$3 萬增至 HK$9 萬，每月少供約 HK$1,160、總利息省約 HK$9,598。可見提高首期、減少貸款額，是壓低每月負擔與總利息成本最直接的方法。
常見問題
How is the EMI calculated and how does the down payment affect it?
Two steps. First, loan amount = car price - down payment (e.g. 300,000 - 60,000 = 240,000). Second, EMI by the equal-instalment annuity formula with r = rate/12, n = term x 12. At 9% for 5 years, EMI ≈ 4,982. The payment is fixed; only the principal/interest split changes monthly. A higher down payment lowers the loan, so the EMI and total interest both fall — the most direct way to cut cost.
What is the difference between reducing-balance and flat rate?
This is the most misunderstood part of car loans. There are two quote bases: reducing-balance (this tool, and mortgages) charges interest on the remaining balance, so interest falls as you repay — it is the APR basis. 'Flat rate' (平息) charges interest on the ORIGINAL full principal for the whole term even as you repay, so it costs far more. The same headline number (e.g. '5% flat') is roughly '9-10% APR' — nearly double. Dealers often quote a low flat rate to make the payment look cheap. Always ask whether a quote is flat or APR and compare on APR.
What hidden costs should I watch?
This tool estimates EMI and interest only. Real car loans add arrangement fees, loan insurance, early-repayment penalties; buying the car also adds first registration tax, licence, insurance, maintenance. Cars depreciate, so a long term risks negative equity (owing more than the car is worth). This tool compares down-payment/rate/term combos; it does not replace the lender's formal quote.
What are the conditions for a HK car loan?
HK car loans are offered by banks and finance companies. Applicants usually need to be 18+, hold a HKID, and provide income proof (payslips, tax demand, bank statements) and address proof. Lenders check the credit report (TransUnion), debt-servicing ability (DSR) and vehicle (new/used, age) to set the amount, term and rate. Good credit and stable income usually get better rates; loan-to-value and max term vary by lender and vehicle age. Terms are per the lender; borrow only what you can repay.
Can I repay a car loan early, and are there penalties?
Most allow partial or full early settlement, but many contracts charge an early-repayment fee or penalty. Under reducing-balance, early repayment saves future interest; under a flat-rate loan it may not save proportionally and you may still owe fees. Ask the lender about early-repayment terms before signing, then judge if it pays off.
相關工具
參考資料
內容審核：香港計算器財經團隊。計算邏輯與公式參考標準等額本息 (息隨本減) 年金模型;車貸審批與理財提示參考投資者及理財教育委員會 (IFEC) 個人理財指引，車輛首次登記稅參考運輸署資料，結果僅供參考，實際以相關機構公佈為準。