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Construction Loan EMI Calculator

A construction loan is not released in one go. Money comes in stages as work finishes, and you pay interest on it from day one. That interest, called pre-EMI, is the cost nobody warns you about.

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The formula

EMI = P x r x (1+r)^n / ((1+r)^n - 1) P = loan amount r = monthly rate n = months PRE-EMI During construction the bank releases money in stages. You pay only interest on whatever has been released. The EMI starts after the full amount is released. STAGE-WISE RELEASE Land / plot 20% Slab, per floor 20% Foundation 15% Brickwork 15% Plinth 15% Finishing 15%

What this assumes

  • Stage percentages are typical. Your bank will have its own schedule in the sanction letter.
  • Pre-EMI assumes each stage is released evenly through the construction period.
  • Interest rate is taken as fixed. Most home loans are floating and will change.
  • Processing fee, legal charges, valuation and insurance are not included.
  • Delay in construction means more months of pre-EMI. This is the most common cost overrun.

Common questions

What is pre-EMI?

While your house is being built, the bank releases money in stages. You pay interest only on what has been released so far. That is pre-EMI. It does not reduce your loan at all. Your actual EMI starts only after the last stage is released.

How much pre-EMI will I pay?

It depends on how long construction takes. On a Rs 25 lakh loan over an 18 month build, pre-EMI can easily cross Rs 2 lakh. That is money gone with no reduction in your loan. The calculator shows your figure.

Can I avoid pre-EMI?

Partly. Some banks let you start full EMI immediately, which means your loan starts reducing from day one. It costs more each month but saves a lot overall. Ask your bank if this option exists.

Why does a construction delay cost so much?

Every extra month is another month of pre-EMI, and if you are also paying rent, you are paying twice. A six month delay on a Rs 25 lakh loan can cost close to Rs 1 lakh in extra interest alone.

Rates last reviewed: August 2026 Full methodology Disclaimer