Basic payment math
Principal and interest on a fixed-rate loan is standard math, and most free calculators get it right.
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PrequalFunnel vs free mortgage calculator plugins and widgets
A free calculator gives your visitors an answer. The question is whether it gives you anything back.
Free plan, no card. Paid plans include a 14-day trial.
Free mortgage calculator plugins and widgets do one job well: they show a visitor a payment. For a loan officer, the gaps are what happens next. Most do not capture the lead with the borrower's numbers, send it to a CRM or HighLevel, carry your brand, speak Spanish or keep US program figures current. PrequalFunnel is built around those gaps.
Key takeaways
- Free plugins are often fine for a basic payment estimate.
- The usual gap is the lead: no form beside the result, no numbers attached.
- Delivery, branding, Spanish and program updates are the other gaps.
- We describe the category, not any named product.
What do free mortgage calculator plugins do well?
Credit where it is due. For a visitor-facing payment tool, many are perfectly good.
Zero cost
No subscription, which matters for a new LO with no marketing budget.
Quick install
Many install from a plugin directory or a copied snippet in minutes.
Familiar layouts
Borrowers recognize the format, which lowers the effort to try it.
What do free plugins usually lack for a loan officer?
The category in general; individual plugins vary, so check the one you use against each row.
| Need | Typical free plugin or widget | PrequalFunnel |
|---|---|---|
| Lead capture with the numbers | No form, or a separate form that loses the scenario | Form beside the result; every input and result saved with the lead |
| CRM and webhooks | Not included | Built-in CRM on every plan; webhooks to HighLevel, Zapier, Make on paid plans |
| Traffic source | Not recorded | UTM tags, ad click IDs, referrer and landing page |
| Branding | Plugin's look, often with its credit or links | Your palette, logo and copy; white-label on paid plans |
| Bilingual | Usually English only | English and Spanish on every calculator except affordability |
| US program figures | Often a generic payment without FHA MIP, VA funding fee or USDA fees | Program calculators with current federal figures |
| Maintenance | Depends on the plugin author | Maintained by PrequalFunnel |
| Works outside WordPress | Some are WordPress-only | Any site builder, including HighLevel funnels |
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Why is lead capture the gap that matters most?
Because a calculator that captures nothing is a service you provide to visitors for free, and then they leave. That may be fine for a real-estate blog. For a loan officer, the calculator is often the most engaged moment on the site: the visitor typed in a price, a down payment and maybe their debts. If there is no way to raise a hand at that moment, that intent goes nowhere.
Some plugins add a contact form below the calculator. That helps, but if the form does not store what the borrower entered and saw, you get a name without a scenario. You start the first call by asking the questions the borrower already answered on your page.
PrequalFunnel puts the lead form inside the calculator and saves every input and result with the contact. Leads land in the built-in CRM and, on paid plans, post to HighLevel or any webhook, so follow-up starts with the borrower's own numbers.
Program figures change; someone has to update them
Conforming loan limits, FHA limits and mortgage insurance figures change. The 2026 baseline conforming loan limit is $832,750 and the FHA upfront MIP is 1.75% of the base loan. A free plugin that was last updated years ago may show borrowers outdated numbers under your name. Check when yours was last maintained.
How do you switch from a free plugin to PrequalFunnel?
Swap the calculator, keep the page.
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List where the plugin appears
Home page, purchase pages, blog posts and any landing pages your ads use.
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Pick matching calculators
A mortgage payment calculator for general pages; FHA, VA or refinance on program pages.
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Brand and write consent
Set your theme and copy, and add consent text approved by your compliance contact.
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Replace the embed
Remove the plugin and paste one line of code in each spot. See embed options.
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Test a lead
Submit the form and confirm the alert and CRM record.
When should you stay with a free plugin, and when should you switch?
An honest split.
A free plugin is fine if…
- You only want visitors to estimate a payment
- You have no follow-up process for web leads yet
- Your site gets very little traffic
- You already capture leads well elsewhere
Switch to a funnel if…
- Visitors use the calculator but rarely contact you
- You want leads to arrive with their numbers
- Follow-up runs in HighLevel or another CRM
- You serve Spanish-speaking borrowers or FHA, VA and USDA buyers
Keep reading
FAQ · 9 questions
Questions loan officers ask
Are free mortgage calculator plugins accurate?
Many are accurate for basic principal and interest. Accuracy issues usually come from what they leave out: taxes, insurance, PMI or MIP, program fees, or outdated figures.
Why not just add a contact form under my free calculator?
You can. The limitation is that most separate forms do not save what the borrower entered or saw, so you get a name without the scenario.
Does PrequalFunnel work on WordPress?
Yes, and on Wix, Squarespace, Webflow, HighLevel funnels and websites, and any site where you can paste one line of code.
Is there a free version of PrequalFunnel?
Yes. The Originator plan is free and includes 5 calculators, the lead form, the CRM and email alerts. It shows a small "Powered by" credit.
Will PrequalFunnel slow down my site like some plugins do?
It loads as one script with a div, not a WordPress plugin that runs on every page, and inline mode is style-isolated. As with any embed, test your page speed after adding it.
Can I remove the branding?
On Producer and Brokerage, yes. White-label removes the credit and lets you serve calculators from your own domain.
Do free plugins send leads to HighLevel?
Generally not on their own. PrequalFunnel sends each lead to HighLevel by webhook on paid plans, with the borrower's numbers ready for custom fields.
Can borrowers use the calculators in Spanish?
Yes, every calculator except the affordability calculator switches to Spanish, including field help and the lead form.
Which competitors do you compare against?
None by name. We compare against the category of free plugins and widgets, because products change and we would rather not misdescribe them.
PrequalFunnel
Your next borrower is already on your site.
Give them the numbers they came for, and get the lead with those numbers attached.
Free forever on Originator. Upgrade when you want webhooks and your own brand. 14-day free trial on monthly and yearly. Cancel before it ends and you pay nothing.