Question 1

Is a higher down payment always better?

Accepted Answer

Not always. A higher down payment reduces the loan amount, EMI, and total interest, but you also give up the opportunity cost of investing that money elsewhere. The better choice depends on your loan rate, expected investment return, and time horizon.

Question 2

What investment return should I assume?

Accepted Answer

Use a conservative long-term assumption that matches the asset you would realistically invest in (e.g. equity mutual funds vs debt funds). Compare a few scenarios (like 8%, 10%, 12%) to see how sensitive the decision is.

Question 3

Does this calculate EMI and total interest for both plans?

Accepted Answer

Yes. It computes loan amount, EMI, total interest paid, and total outflow for both down payment scenarios so you can compare the full cash outflow over the tenure.

Question 4

How is opportunity cost handled?

Accepted Answer

The difference between the two down payments is treated as a lump sum investment in Plan B and grown at your assumed return rate. That investment corpus is compared against the additional interest and cash outflows from the higher EMI.

Question 5

Is this the same as prepayment vs investing?

Accepted Answer

It’s the same decision framework. Instead of prepaying later, you’re choosing at the start whether to put more money into the house (higher down payment) or invest it and carry a larger loan.

Down Payment vs Investment Calculator

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