Rent vs Buy Calculator|租房 vs 买房计算器

租房 vs 买房计算器 | Rent vs Buy Calculator

租房 vs 买房计算器 Rent vs Buy Calculator

对比不同持有年限下,租房与买房的“综合净成本”(现金流 + 资产回收)。
Compare the *net total cost* of renting vs buying over different horizons (cash outflows + equity recovery).

1. 输入参数 · Parameters
你打算在该城市/该房子居住(或持有)多久?这是影响结论的关键变量。
How long will you stay/hold the property? This is one of the most important drivers of the result.
购房总价(不含后续房产税、维护费等)。
Purchase price of the home (excluding ongoing taxes/maintenance).
首付越高,贷款越少,但占用的自有资金(机会成本)也越高。
Higher down payment reduces mortgage interest, but increases capital tied up (opportunity cost).
固定利率假设:月利率 = 年利率 / 12。若你是浮动利率,可用“保守值/中性值/乐观值”多算几次。
Assumes fixed APR: monthly rate = APR/12. If your loan is variable, run scenarios with different rates.
购入成本:契税/中介/评估/代办/杂费等(用比例近似)。卖出成本:中介费/税费/过户等(用比例近似)。
Use % estimates for fees/taxes at purchase and sale. Adjust to local reality.
房产税和维护通常与房屋价值相关(粗略按“当期房价 × 比例”估算)。维护可理解为:修缮、翻新、家电更换等长期平均。
Property tax & maintenance are approximated as % of home value per year (simple but useful).
HOA/物业费按月计入;保险按年计入(工具会均摊到每月)。
HOA is monthly; home insurance is annual (the tool spreads it across months).
这是“买房 vs 租房”结论最敏感的参数之一。可以用 0%、2%、5% 跑三个场景。
One of the most sensitive inputs. Try scenarios like 0%, 2%, 5%.
工具按“每年复利增长”模拟租金变化(非每月线性)。如你的租约每年一次调整,用这个更接近现实。
Rent is modeled with annual compounding growth (more realistic for yearly lease adjustments).
若你所在地租房通常不需要该项,可填 0。
If not applicable in your region, set it to 0.
若你选择租房,首付资金可能用于投资;若买房,每月现金流可能更紧或更松。这里用一个年化回报率做“机会成本”粗算。
If you rent, your down payment cash might be invested. This rate helps estimate opportunity cost.
3. 使用说明 · Notes(中英加长版)
  • 这个工具在算什么? · What does this tool actually measure?
    中文:这里的“净成本”不是简单把月供加总,而是把买房看成“现金流支出 + 最后卖出回收资产”两部分。 所以:
    买房净成本 ≈(首付 + 购入成本 + 月供 + 税费维护等) −(期末卖出回收权益)
    English: The “net cost” is not just the sum of mortgage payments. Buying is modeled as “cash outflows + equity recovered when selling”. So:
    Net cost of buying ≈ (down payment + closing + monthly costs) − (equity recovered at the end)
  • 为什么“年限”是最关键的输入? · Why is the time horizon so important?
    中文:买房的前期一次性成本(税费/中介/装修/折腾成本)更集中;租房的成本更“均匀”。 因此短期住 1–3 年时,买房往往更吃亏;住得越久,越容易摊薄一次性成本。
    English: Buying has front-loaded costs, while renting is smoother month to month. Over short horizons (1–3 years), buying often looks worse; over longer horizons, fixed costs get diluted.
  • 房价涨幅 & 租金涨幅,是结论最敏感的两项 · The two most sensitive drivers
    中文:很多争论不是“租还是买”本身,而是对未来的假设不同。建议至少跑 3 组场景:
    • 保守:房价涨幅 0% / 租金涨幅 2%
    • 中性:房价涨幅 2% / 租金涨幅 2%
    • 乐观:房价涨幅 5% / 租金涨幅 2%
    English: Most debates are really about assumptions. Try 3 scenarios: conservative / base / optimistic.
  • 机会成本(Investment Return)怎么用? · How to interpret opportunity cost?
    中文:如果你租房,首付资金可能拿去投资;如果你买房,首付资金被锁定在房子里。 这个工具用“年化回报率”去粗略表达这种差异(不是预测、也不是建议)。
    English: Renting may allow investing the would-be down payment. Buying ties up capital. The investment return input approximates that opportunity cost (not a forecast, not advice).
  • 关于“买房净成本”里包含哪些费用? · What is included in buying costs?
    中文:本工具纳入:
    • 购入交易成本(一次性)
    • 房贷月供(等额本息摊还)
    • 房产税(按年、按房价比例估算)
    • 维护费(按年、按房价比例估算)
    • 物业费 HOA(按月)与房屋保险(按年)
    • 卖出交易成本(期末按房价比例扣除)
    English: Included: closing cost, amortized mortgage, property tax, maintenance, HOA, insurance, selling cost.
  • 哪些现实因素没有纳入? · What this tool does NOT model?
    中文:为了保持“通用 + 易用”,下列项未强行建模:
    • 装修/家具一次性支出(你可把它加进“购入交易成本%”或把房价提高来近似)
    • 提前还款、再融资、浮动利率
    • 税务抵扣、资本利得税、租房补贴等政策差异
    • 通勤、学区、生活质量、搬家成本(这往往是最真实的决策因素)
    English: Not modeled: renovation/furniture explicitly, refinancing, variable rates, tax credits, policy-specific items, and “life-quality” factors like commute/school district/moving hassle.
  • 如何把结果用于决策? · How to use the result in decision making?
    中文:建议把结果当作“量化对话的起点”,而不是“最终答案”。你可以问自己:
    • 我最可能住几年?(1–3 / 5–8 / 10+)
    • 我对房价的看法更偏保守还是乐观?
    • 我买房后现金流会不会变得紧张?(这比“总成本”更重要)
    English: Treat it as a quantified starting point. Cash-flow resilience often matters more than total cost.

免责声明:本工具仅用于学习与估算,不构成任何投资、贷款或置业建议。不同国家/城市税费制度差异很大, 请以当地法规与专业意见为准。
Disclaimer: Educational estimates only. Not financial, legal, or real-estate advice. Local rules vary widely.