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FC's Mortgage Calculator

Calculates loan payment and optionally down payment, affordable price, taxes, points and PMI. Includes schedule. Supports international conventions.

FC's Mortgage Calculator Plugin can calculate a number of unknown values including affordable home price, monthly loan payment or percentage of cost available as down payment. It can create a detailed amortization schedule with date based payments and charts. The calculator optionally supports points, private mortgage insurance (PMI), property taxes and hazard insurance. Your site's visitors can select their own currency and date convention used in the loan schedule. This is ideal if your site attracts visitors from around the globe. Select from one of four predefined sizes or you can modify CSS file to customize size and colors. Supports touch devices and a responsive websites. This plugin is based on and uses the code from my Mortgage Calculator.

Rebranding with your site's brand name is supported and encouraged.

The plugin may be used (a) in a post or page's content area via a shortcode; or (b) used in a sidebar widget area; or (c) called from any template file. See usage under installation for details.

As of this writing, has seven plugins listed in the WordPress Plugin Directory with several more available on the website. All plugins have the same general feature set and are consistent in their styling and the way they work. This means you can install all these plugins and maintain a consistent look and feel across your website or blog. If you blog about money, you are encouraged to install all the plugins on your site. It's simple. The more pages, the more opportunity.

Below links take you to the indicated WordPress Plugin Directory page.

  1. Auto Loan Calculator - solves for several unknowns and creates a payment schedule.
  2. Loan Calculator - a general purpose loan calculator with amortization schedule and charts.
  3. Retirement Age Calculator - answers, at what age will I be able to retire given my investment plan?
  4. Retirement Nest Egg Calculator - answers, what will be the value of my retirement fund when I retire?
  5. Retirement Savings Calculator - how much do I have to invest periodically to reach my retirement goal?
  6. Savings Calculator - calculates the results of regular savings and investing
Contributors financialcalculators
Tags amortization, amortization schedule, calculator, loan, mortgage, mortgage calculator, mortgage loan calculator, plugin, sidebar, widget
  1. fc-mortgage-calculator screenshot 1

    The Mortgage Calculator's front end showing 2 of the 4 configurable sizes, one with custom brand and no sizing buttons.

  2. fc-mortgage-calculator screenshot 2

    Loan payment schedule shown in a lightbox. User can select how date is displayed from 3 international date conventions.

  3. fc-mortgage-calculator screenshot 3

    Three charts shown in a lightbox.

  4. fc-mortgage-calculator screenshot 4

    Plugin's settings dialogue, as seen under Appearance Widgets page in WordPress's administration area.

Either (a) upload the fc-mortgage-calculator folder with all its files to the /wp-content/plugins/ folder or (b) unzip the plugin's zip file in the /wp-content/plugins/ folder.

Activate the plugin through the Plugins -> Installed Plugins menu in WordPress


There are 3 mutually exclusive ways you can deploy the calculator to an individual page (though you can use all three methods on different pages within a site):

  1. If you are using widgets, just add the plugin to the sidebar through the Appearance -> Widgets menu in WordPress. Be sure to click Save.
  2. Add the following code <?php show_fcmortgage_plugin(); ?> to your template where you want the calculator to appear. See below for options.
  3. Add the shortcode [fcmortgageplugin] in the content area of your page or post and configure shortcode parameters.

Shortcode parameters

* sc_size= tiny | small | medium | large
* sc_custom_style= No | Yes
* sc_add_link= No | Yes
* sc_brand_name= 
* sc_hide_resize= No | Yes
* sc_price=
* sc_pct_dwn=
* sc_loan_amt=
* sc_n_months=
* sc_rate=
* sc_points=
* sc_taxes=
* sc_insurance=
* sc_pmi=

Examples (1st includes all options):

[fcmortgageplugin sc_size="medium" sc_custom_style="No" sc_add_link="No" sc_brand_name="" sc_hide_resize="No" sc_price="355000.0" sc_pct_dwn="15.0" sc_loan_amt="0.0" sc_n_months="360" sc_rate="5.5" sc_points="0" sc_taxes="6000" sc_insurance="600" sc_pmi="0"]
[fcmortgageplugin sc_size="small" sc_custom_style="Yes" sc_hide_resize="Yes"]
[fcmortgageplugin sc_custom_style="No" sc_add_link="Yes" sc_brand_name="Friendly Mortgage" sc_hide_resize="Yes" sc_price="275400" sc_pct_dwn="20.0" sc_loan_amt="0.0" sc_n_months="180" sc_rate="5.5"]

Optional array parameter passed to show_fcmortgage_plugin()

Valid values for options are the same as the shortcode above.

<?php show_fcmortgage_plugin(array('op_size' => "medium",
        'op_custom_style' => "No",
        'op_add_link' => "Yes",
        'op_brand_name' => "Karl's",
        'op_hide_resize' => "No",
        'op_price' => "350000.00",
        'op_pct_dwn' => "20.0",
        'op_loan_amt' => "0.00",
        'op_n_months' => "180",
        'op_rate' => "5.5",
        'op_points' => "2.5",
        'op_taxes' => "12000.0",
        'op_insurance' => "1200.0",
        'op_pmi' => "0.0")); ?>


1. If you want to add your brand to the calculator, the *_add_link
option must be set to "Yes" (i.e. create a subtle follow link to 
2. When branding, the brand name will be added before "Mortgage Loan
3. If _custom_style is set to "Yes", the plugin will load
fin-calc-widgets-custom.css located in the plugin's CSS folder.
If you set the option to "Yes" without making any changes, the
calculator will change to a horrendous red which indicates the
custom css is being used.
4. The plugin is built and tested on HTML5/CSS3 pages.
5. size (max-width): large: 440px, medium: 340px, small: 290px,
tiny: 150px


  • Fixed - some installations the currency / date dialog was not accessible because the background overlay was on top of the dialog.
  • Fixed - some installations the Help text was visible on the main page and not just when the Help button was clicked
  • Fixed - missing "+" "-" signs for the optional resizing feature


  • Improved styling
  • Converted project to use a single file CSS regardless of calculator size selected. Single file will be compatible across all plugins so site owners can modify style once and copy to all other plugins.


  • Fixed readme.txt, 2 errant commas in source and optional copyright backlinks.


  • First release

Can the Mortgage Calculator plugin be used on a commercial website?

Yes. I would be honored. Thanks.

Also, if you happen to be a financial blogger, I would encourage you to add a "Calculators" or "Tools" section to your site and include all my calculators. More content equals more opportunity. I expect to have six free plugins by early 2017.

Does your plugin have any embedded advertising?

Absolutely not.

Is your plugin self contained?

Yes. 100% of the plugin is installed on your server. There are no external dependencies.

Does the plugin include any backlinks?

No, not by default. If you decide to brand the calculator with your brand and / or set the add_link option to Yes, two very discreet links are added to my site. (User will not know there are links unless their mouse passes over one.) One anchor is around the copyright in the lower left. The other around the title. Of course you are free to set the _add_link option to Yes even if you don't rebrand the calculator. :)

Is the calculator plugin responsive?

Yes. In fact, I use it on a Bootstrap responsive site.

Does the calculator support touch devices?

Yes. Users use the calculator with all types of devices.

Do you offer other calculator plugins?

Yes. I have a conventional Loan Calculator hosted in this directory. And here is my widgets and plugin page where you'll find other free plugins as well as some "plus" versions which are free for a limited time only.

I like your plugin and I'd like to contribute something but I notice you don't have a link for contributions, why not?

Thank you. That's very kind of you. Actually, you can contribute, and it won't cost you a cent. Please stop by my website and check it out. In addition to providing some very advanced calculators, I think that I'm the only one that hosts a public question and answer site to provide support for their calculators. Take a look, and if you like what you see, please spread the word. That's better than any monetary compensation.

The plugin version indicates it is new. Can I trust it?

Yes. While this is a new plugin, the calculator has been used on my site for years. It has been used by literally 100,000's of users. Any issues you might encounter would most likely be around installing it on a site. Should you run into an problem, I'm happy to help resolve it.

Version 1.1.1

Requires WordPress version: 2.0.1 or higher

Compatible up to: 4.7.2

Last Updated 02 Jan 2017

Date Added: 02 Dec 2016

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