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Dynamic Amortization Schedule (Updated 2.06.2020)

This is a dynamic amortization schedule for debt that gives the user the capability to model a loan with an interest only period up front and an amortizing floating rate debt repayment period once the interest only period is over. This module also allows the user to model other more straightforward scenarios such as an interest only loan and a loan with no interest only period and a fixed interest rate.

Along with the download below, there are now two videos. The first explains how to use this module and also how the formulas work for those who are interested in learning more about the mechanics. The second video is a Watch Me Build that shows you how to roll up the monthly data into annual periods.

Dynamic Amortization Schedule Features

This module is built to account for a 360-month (30-year) period with an interest only period of the users choosing, a floating rate or fixed rate amortization period of the user’s choosing, and the ability to select a balloon payment date. The module has a place to insert the floating rate debt forecast (row 19) and if you would like to use this module for a fixed interest rate loan, you just need to insert the same interest rate across the entirety row 19.

a discussion of the A.CRE Accelerator real estate financial modeling courses

Additional Learning Component

I also added a second sheet to this model, as mentioned in the video, for those who are less experienced with building amortization tables and want an easy-to-understand model to see how a basic, fixed rate amortization table works. The payment function in this module is a bit more complex due to having to constantly recalculate the payment for floating rate debt, so the second sheet is provided to give a more basic understanding of straight forward amortization schedules.

This module can be inserted into your own model by simply linking the payment line form this module into the debt payment section of your model being careful to properly sync up the dates.

Hope you find the module and video useful.

Video Walkthrough – Dynamic Amortization Schedule

Convert The Data to an Annual Schedule


Download the Dynamic Amortization Schedule

To make these files accessible to everyone, they are offered on a “Pay What You’re Able” basis with no minimum (enter $0 if you’d like) or maximum (your support helps keep the content coming – similar real estate Excel modules sell for $100 – $300+). Just enter a price together with an email address to send the download link to, and then click ‘Continue’. If you have any questions about our “Pay What You’re Able” program or why we offer our models on this basis, please reach out to either Mike or Spencer.


Frequently Asked Questions about the Dynamic Amortization Schedule in Excel

The model supports a range of loan scenarios, including:

Interest-only loans

Loans with an initial interest-only period followed by amortizing payments

Loans with fixed interest rates

Loans with floating interest rates

Loans with a user-defined balloon payment date

Interest rates are entered in row 19 of the schedule. For floating rate debt, input your forecasted rates across the row. For fixed rate loans, simply enter the same rate across all cells in row 19.

The model is designed to support a maximum loan term of 360 months, or 30 years.

Yes. You can insert this module into your own model by linking the payment line from this schedule to the appropriate section in your model. Be sure to align the dates correctly when integrating.

There is a second sheet in the Excel file that shows a basic, fixed-rate amortization table to help less experienced users understand the foundational concepts before tackling the dynamic module.

The first video explains how to use the module and how the formulas work. The second is a “Watch Me Build” that demonstrates how to convert the monthly data into annual figures.

The model is offered on a “Pay What You’re Able” basis, allowing users to download it for free or contribute any amount. This helps keep content accessible and supports continued development.


About the Author: Michael has spent a decade working in various capacities on more than $7 billion of real estate transactions spanning all asset classes and geographies throughout the USA. Michael is both the founder of Firm Ridge Real Estate, which has a core focus on niche and emerging real estate strategies and A.CRE Consulting, a real estate advisory and financial modeling firm that has provided services on projects totaling more than $21 billion to date. Prior, Michael was a founding member and COO of Stablewood Properties, an institutionally backed real estate operator. And before Stablewood, Michael was at Hines in San Francisco.  Michael has both an MBA and Master in Real Estate with a concentration in Real Estate Finance from Cornell University.