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FHA vs conventional: how MIP and PMI change the monthly payment
How FHA mortgage insurance (MIP) and conventional PMI are calculated, a side-by-side payment example on a $350,000 home, and when each wins.
Vol. 1Updated September 25, 202612 guides
The Ledger
Guides on calculators, loan math and the follow-up that turns numbers into borrowers.
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Seller net sheets on realtor websites: turning “what will I walk away with?” into listings
What a seller net sheet calculator includes, where it belongs on an agent's website, the follow-up that wins listings, and pitfalls to avoid.
White-label calculators for agencies: how to package, price and deliver them
How marketing agencies can package white-label mortgage and finance calculators for clients: offers, pricing models, delivery checklist and reporting.
How to embed a calculator in WordPress, Wix, Squarespace, Webflow and HighLevel
Where to paste a calculator embed code in WordPress, Wix, Squarespace, Webflow and HighLevel funnels — plus width, mobile and speed checks.
How to send mortgage calculator leads into GoHighLevel with a webhook
Step-by-step: create an inbound webhook trigger in HighLevel, connect a CalcFunnel calculator, map the fields and build the follow-up workflow.
Rent vs buy: what every calculator input means and how to set it
A plain-English guide to rent-vs-buy calculator inputs — price, rent growth, appreciation, time horizon, selling costs — and how to set them honestly.
How to calculate your refinance break-even point (and when it misleads)
The refinance break-even formula, a worked example, and why comparing total interest over the years you'll keep the loan matters just as much.
The VA funding fee explained: rates, examples and who is exempt
Current VA funding fee rates by down payment and first or subsequent use, worked examples on a $400,000 home, exemptions and financing the fee.
Debt-to-income ratio: front-end vs back-end, with worked examples
What front-end and back-end DTI measure, how lenders use them, a worked example on $8,000 a month, and how to lower DTI before applying.
FHA vs conventional: how MIP and PMI change the monthly payment
How FHA mortgage insurance (MIP) and conventional PMI are calculated, a side-by-side payment example on a $350,000 home, and when each wins.
A compliance checklist for mortgage calculator pages and lead forms
Ten checks for US mortgage calculator pages: NMLS ID, disclaimers, Regulation Z trigger terms, TCPA consent, privacy, Fair Housing and accessibility.
Where to put a mortgage calculator on your website: 7 placements, ranked
Seven places a mortgage calculator earns leads on a loan officer or agent site, ranked by visitor intent — with the action to pair with each.
How mortgage calculators generate leads (and why most don't)
Why interactive calculators convert better than contact forms, the five things that make a calculator produce leads, and a simple way to measure it.
Browse by category
Lead generationHow calculators turn website visitors into borrowers and sellers — placement, offers and follow-up.3 guidesLoan programs explainedFHA, VA, USDA, conventional and jumbo — the rules and fees behind the numbers, with sources.2 guidesCalculator mathWhat each input means, how the formulas work and how to read the results honestly.3 guidesComplianceConsent, disclosures and advertising rules that apply to calculator pages and lead forms.1 guidesAgency playbooksEmbedding, integrating, packaging and pricing calculators for clients.3 guides
Q.01What does the CalcFunnel blog cover?
How mortgage and finance calculators generate leads, the rules and fees behind loan programs, the math behind calculator inputs, compliance for calculator pages and lead forms, and playbooks for agencies.
Q.02Who writes these guides?
The CalcFunnel editorial desk — the product team that builds and verifies the calculators. See our editorial policy.
Q.03How often are guides updated?
Whenever a figure they cite changes, and at least quarterly. Every guide shows its last-updated date.
Q.04Are the guides financial or legal advice?
No. They are general information. Confirm figures with the cited sources and your own advisors.
Q.05Can I republish a guide?
Please link to it instead. Short quotes with attribution and a link are fine.
Q.06Can I suggest a topic or write for you?
Yes — see write for us.
Q.07Is there an RSS feed?
Yes: /rss.xml.
Q.08Where do I start?
The start-here path takes you through three guides in order.
Read it. Then run it.
Every guide pairs with calculators you can embed today.
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