Borrowing Capacity Calculator (VND)
Before you start viewing apartments, the practical question is blunt: how much can I actually borrow on my income? A bank in Vietnam does not lend against your dream — it lends against the monthly repayment your income can carry, then works backwards to a maximum loan. This tool reproduces that logic exactly: it takes your income, applies the bank's debt-to-income (DTI) ceiling, subtracts the debts you already service to get your maximum monthly repayment, then converts that repayment into a maximum loan at a given rate and term.
Take an illustrative expat household: 60.000.000 VND/month in stable income, 8.000.000 VND/month of existing repayments, and a bank DTI cap of 50%. The maximum repayment for a new loan is 60.000.000 × 50% − 8.000.000 = 22.000.000 VND/month. At an assumed 11%/year over a 25-year term, that repayment supports a loan of roughly 2.244.638.962 VND. With a 30% down payment, that loan maps to a property worth about 3.206.627.089 VND, of which you fund 961.988.127 VND yourself.
One caveat governs every figure here: the 50% DTI cap, the 11%/year rate and the 30% down payment are illustrative, editable assumptions. Each Vietnamese bank sets its own DTI ceiling (often 50–70% depending on income and profile), floating rates reset periodically after any promotional period, and minimum down payments vary by product — and foreign borrowers may face extra documentation or eligibility rules. Ask your bank for its actual terms and re-run the numbers.
How the calculator works
Step 1 — Maximum monthly repayment
Banks cap total debt service as a share of income (DTI).
Max repayment = Income × DTI% − Existing debts
| Symbol | Meaning |
|---|---|
| Income | Stable monthly income (60.000.000 VND) |
| DTI% | Bank's debt-to-income ceiling (50%, illustrative) |
| Existing debts | Current monthly repayments (8.000.000 VND) |
For the sample household: 60.000.000 × 50% − 8.000.000 = 22.000.000 VND/month available for a new loan.
Step 2 — Convert repayment into a maximum loan
A fixed monthly repayment is an annuity, so the maximum loan is its present value:
Max loan = Repayment × (1 − (1 + r)^(−n)) / r
where r = annual rate / 12 / 100 is the monthly rate and n = years × 12 is the number of payments. With 22.000.000 VND/month at 11%/year over 25 years (n = 300), the maximum loan is about 2.244.638.962 VND.
Step 3 — Imply a property price from the down payment
If the loan funds (100 − 30%) = 70% of the price:
Property price = Max loan / (1 − 30%/100) = 2.244.638.962 / 0.7 ≈ 3.206.627.089 VND, with 961.988.127 VND coming from your own cash.
The two biggest levers
- Term length: a longer term lets the same repayment support a bigger loan. At 22.000.000 VND/month, a 25-year term borrows 2.244.638.962 VND, but a 20-year term borrows only 2.131.393.858 VND — the trade-off is paying interest for more years.
- Existing debt: every dong of current repayment comes straight off your allowance. Clearing a car loan or card balance before applying directly raises your borrowing capacity.
What the model leaves out
It assumes a constant rate for the whole term (real floating rates usually rise after the promo period), and ignores appraisal fees, mandatory loan insurance and income variability. Read the result as a theoretical ceiling for budgeting, not a bank's approval.
Worked example: 60.000.000 VND/month income, 50% DTI cap, 11%/year
Illustrative assumptions: 60.000.000 VND/month income, 8.000.000 VND/month of existing debts, a 50% DTI cap, a constant 11%/year rate, and a 30% down payment. The repayment stays fixed at 22.000.000 VND/month; the table shows how the loan and implied price move with the term.
| Term | Max repayment/month | Max loan | Property price (30% down) |
|---|---|---|---|
| 15 years | 22.000.000 | 1.935.602.616 | 2.765.146.594 |
| 20 years | 22.000.000 | 2.131.393.858 | 3.044.848.369 |
| 25 years | 22.000.000 | 2.244.638.962 | 3.206.627.089 |
| 30 years | 22.000.000 | 2.310.139.612 | 3.300.199.446 |
Three takeaways.
- The repayment ceiling is fixed by income, DTI and existing debt, not by the term — always 22.000.000 VND/month here. The term only changes how much principal that repayment can finance.
- Stretching the term raises capacity with diminishing returns. Moving from 15 to 25 years adds a lot of headroom; pushing on to 30 years adds far less while locking you into five more years of interest.
- Borrowing to the ceiling is risky. The 2.244.638.962 VND figure is a theoretical maximum. Maxing it out commits 22.000.000 VND every month with no cushion for a rate reset or an income gap. Most disciplined buyers borrow a notch below the cap.
To see the exact monthly payment and the principal-and-interest schedule for a specific loan, pair this with FiMo's mortgage and home-affordability calculators.
Frequently asked questions
How much can I borrow for a home on my income in Vietnam?
Banks work backwards from the maximum monthly repayment your income can carry: income times the DTI ceiling, minus existing debts. Illustrative example: 60.000.000 VND/month income, 8.000.000 VND of debts and a 50% DTI cap give a maximum repayment of 22.000.000 VND/month. At an assumed 11%/year over 25 years, that supports a loan of about 2.244.638.962 VND. Enter your bank's actual cap and rate to personalise it.
What is DTI and what ceiling do Vietnamese banks use?
Debt-to-income (DTI) is the share of your monthly income allowed to go to debt repayment. A bank sets a ceiling — 50% in our example — so your total repayments, including the new loan, can't exceed that share of income. In practice Vietnamese banks commonly use 50–70% depending on income level and profile strength. The 50% used here is illustrative; ask your lender for its actual limit, and note foreign borrowers may face additional checks.
What is the formula for maximum borrowing capacity?
Two steps. (1) Max repayment = Income × DTI% − Existing debts. (2) Since a fixed repayment is an annuity, Max loan = Repayment × (1 − (1 + r)^(−n)) / r, where r = annual rate / 12 / 100 and n = years × 12. Example: 22.000.000 VND/month at 11%/year over 25 years (n = 300) gives about 2.244.638.962 VND. This is exactly what the calculator above computes, so every figure is reproducible.
How do existing debts affect how much I can borrow?
Every dong of current monthly repayment is subtracted straight from your repayment allowance, so it cuts capacity fast. In the example, 8.000.000 VND of debts reduces the maximum repayment to 22.000.000 VND/month, down from 30.000.000 VND if you were debt-free. Clearing a car loan or credit-card balance before applying is often the quickest way to raise your borrowing power.
What property price can my loan afford?
It depends on your down payment. If the loan funds 70% of the price (a 30% down payment), then Property price = Max loan / 0.7. A 2.244.638.962 VND loan maps to a home worth about 3.206.627.089 VND, with 961.988.127 VND funded by your own cash. A larger down payment buys a pricier home for the same loan, but requires more cash up front.
Does a longer loan term let me borrow more?
Yes, but with diminishing returns and more total interest. On the same 22.000.000 VND/month at 11%/year, a 20-year term borrows 2.131.393.858 VND while 25 years borrows 2.244.638.962 VND. A longer term lets the repayment finance more principal, but you pay interest over more years, so weigh the extra capacity against the lifetime interest cost.