Home » All Calculators » Financial Tools » Construction To Permanent Loan Calculator

Construction To Permanent Loan Calculator

Photo of author
Published on

When you're building your dream home, navigating the financing process can be as daunting as choosing the perfect floor plan. That's where a Construction To Permanent Loan Calculator comes into play. This nifty tool is designed to simplify the financial journey of constructing a home by providing clear estimates on the future mortgage payments once the construction phase is complete.

Purpose and Functionality

A construction to permanent loan is a special type of financing that covers the cost of building your home and then converts into a traditional mortgage, without the need to apply for a new loan. The calculator for this type of loan plays a crucial role in planning and budgeting, helping you understand how much you'll be paying once the construction is over and the permanent mortgage phase begins.

The core formula it uses is known as the amortization formula:

Monthly Mortgage Payment (M) = P[r(1+r)^n] / [(1+r)^n - 1]


  • M is the monthly mortgage payment.
  • P is the loan amount that transitions into the permanent phase after construction.
  • r is the monthly interest rate, derived from the annual interest rate divided by 12.
  • n is the total number of payments, calculated as the loan term in years multiplied by 12.

Required Inputs

For our calculator to work its magic, you'll need to input:

  • Loan Amount (P): The amount financed that will transition to a mortgage.
  • Annual Interest Rate: The yearly charge for borrowing, which is then converted to a monthly rate.
  • Loan Term (Years): How long you'll have to pay off the loan, converted to months for calculation.

Step-by-Step Examples

Let's break down an example to see the calculator in action:

Suppose you have a loan amount of $200,000, an annual interest rate of 4%, and a loan term of 30 years. Here's how it works:

  1. Convert the annual interest rate to monthly: 0.04 / 12 = 0.003333.
  2. Convert the loan term to months: 30 * 12 = 360.
  3. Plug these figures into our formula to calculate the monthly payment.

By following these steps, you'd find that the monthly payment for these parameters is approximately $954.83.

Information Table

Here's a quick reference table for different scenarios based on varying interest rates and loan terms for a $200,000 loan amount:

Loan Term (Years)Annual Interest RateMonthly Payment


The Construction To Permanent Loan Calculator is an invaluable tool for anyone looking to build and finance their home seamlessly. It not only helps in understanding the financial implications of the loan terms and interest rates but also aids in making informed decisions about your future payments. With this calculator, managing your construction loan and transitioning to a permanent mortgage becomes a clear and straightforward process, allowing you to focus on the exciting journey of bringing your dream home to life.

Leave a Comment