什麼是良好的債務收入比（DTI）？完整指南
什麼是債務收入比？
Your debt-to-income (DTI) ratio is a key financial metric that compares your total monthly debt payments to your gross monthly income. Lenders use DTI to assess your ability to manage monthly payments and repay borrowed money. It's expressed as a percentage: the lower your DTI, the less risky you appear to lenders. A healthy DTI can help you qualify for better interest rates on mortgages, auto loans, and credit cards.
你的債務收入比（DTI）是一個關鍵的財務指標，用於比較你每月總債務還款額與每月總收入。貸款機構使用DTI來評估你管理月度還款和償還借款的能力。它以百分比表示：DTI越低，你在貸款機構眼中的風險就越小。健康的DTI可以幫助你獲得更優惠的抵押貸款、汽車貸款和信用卡利率。
如何計算你的DTI比率
To calculate your DTI, add up all your monthly debt obligations — rent or mortgage, car payments, credit card minimums, student loans, personal loans, and any other recurring debt payments. Divide this total by your gross monthly income (before taxes) and multiply by 100. For example, if you pay $2,000 in monthly debt and earn $6,000 per month, your DTI is 33.3%. Note that living expenses like utilities, groceries, and insurance are not included in DTI calculations.
要計算你的DTI，將你所有的月度債務義務相加——租金或抵押貸款、汽車貸款、信用卡最低還款額、學生貸款、個人貸款以及任何其他經常性債務還款。將這個總額除以你的月總收入（稅前）再乘以100。例如，如果你每月支付2,000美元的債務，月收入為6,000美元，你的DTI為33.3%。請注意，水電費、食品雜貨和保險等生活費用不計入DTI計算。
前端DTI vs 後端DTI
Lenders typically categorize DTI as follows: Excellent (28% or below), Good (29-36%), Fair (37-43%), and Needs Improvement (above 43%). Most mortgage lenders prefer a front-end ratio (housing only) under 28% and a back-end ratio (total debt) under 36%. For conventional mortgages, the maximum back-end DTI is typically 43-45%, though some government-backed loans may allow higher ratios with compensating factors like a high credit score or large down payment.
貸款機構通常將DTI分類如下：優秀（28%及以下），良好（29-36%），一般（37-43%），需要改善（43%以上）。大多數抵押貸款機構偏好前端比率（僅住房）低於28%，後端比率（總債務）低於36%。對於傳統抵押貸款，最大後端DTI通常為43-45%，儘管一些政府支持的貸款可能允許更高的比率，前提是有補償因素如高信用評分或大額首付。
為什麼貸款機構關注你的DTI
The front-end ratio only considers housing costs (mortgage or rent, property taxes, homeowners insurance, and HOA fees) divided by gross income. The back-end ratio includes all monthly debt payments. While both matter, the back-end ratio is the more comprehensive measure of your financial health. A high front-end ratio but low back-end ratio might indicate you're house-poor — spending too much on housing relative to income.
前端比率僅考慮住房成本（抵押貸款或租金、房產稅、房屋保險和HOA費用）除以總收入。後端比率包括所有月度債務還款。雖然兩者都很重要，但後端比率是你財務健康狀況更全面的衡量標準。前端比率高但後端比率低可能表明你被房貸壓垮了——相對於收入，住房支出過高。
如何改善你的DTI比率
To lower your DTI, you can increase your income (side hustles, career advancement), pay down existing debts aggressively, avoid taking on new debt, refinance high-interest loans to lower monthly payments, or consider debt consolidation. Even small improvements can make a difference — paying off a $200 monthly credit card minimum on a $5,000 monthly income improves your DTI by 4 percentage points.
要降低你的DTI，你可以增加收入（副業、職業發展），積極償還現有債務，避免承擔新債務，為高息貸款再融資以降低月供，或考慮債務合併。即使是小的改進也能產生效果——在月收入5,000美元的情況下，還清每月200美元的信用卡最低還款額，可以將你的DTI提高4個百分點。