Our Mission
Buying a home is the largest financial decision most Americans will ever make. Most mortgage calculators available online present an incomplete picture — showing only principal and interest while omitting property taxes, homeowners insurance, PMI, and HOA fees. That gap between the advertised payment and the real monthly obligation catches buyers off guard at exactly the wrong moment.
mortgagecalculatorus.net was built to close that gap. Every calculator on this platform computes the full monthly payment using formulas drawn directly from official US government documentation — HUD mortgagee letters, VA circulars, CFPB guidelines, and the Fannie Mae Selling Guide. No estimates. No approximations where official numbers exist. No commercial incentive to show a lower payment than reality.
We do not originate loans, refer borrowers to lenders, collect personal information, or display advertising. This platform exists solely to provide accurate, transparent mortgage calculations to anyone who needs them.
What This Platform Is
- A free mortgage calculation tool
- Built on official US government sources
- Fully transparent — every formula documented
- Independent of lenders and affiliates
- Private — all calculations run in your browser
- An educational resource, not financial advice
What This Platform Is Not
- A mortgage lender or broker
- A licensed financial advisor
- A lead generation or referral service
- A guarantee of loan approval or terms
- A substitute for a licensed mortgage professional
- A platform that collects or sells user data
How Accuracy Is Maintained
Every formula on this platform traces back to a primary government source. The process is documented and repeatable.
Formulas sourced from primary regulatory documents
No formula is used without identifying its regulatory origin. FHA MIP rates are sourced from HUD Mortgagee Letters. VA funding fees are sourced from VA circulars and 38 U.S.C. § 3729. PMI cancellation logic follows the Homeowners Protection Act of 1998.
Cross-validated against CFPB and Fannie Mae reference tools
Before publication, every calculator's output is verified against the CFPB's mortgage calculator and Fannie Mae's published amortization reference. Any discrepancy triggers a full formula review before the page goes live.
Rate tables updated when regulations change
HUD, VA, and CFPB publish updates via mortgagee letters and circulars throughout the year. Regulatory rate tables on this platform are reviewed each January and whenever an official update is published mid-year.
Full methodology published and open for scrutiny
The Methodology page documents every formula, assumption, data source, and known limitation for each calculator — so users, journalists, or financial professionals can independently verify any result this platform produces.
Official Sources Behind Every Formula
FHA upfront MIP (1.75%), annual MIP rate schedule by LTV and term, and loan limits. Sourced from HUD Mortgagee Letter 2023-05 and the FHA Single Family Housing Policy Handbook.
hud.gov/program_offices →VA funding fee tables by service type, down payment tier, and first/subsequent use. Sourced from VA Circular 26-23-17 and 38 U.S.C. § 3729, as amended by the Blue Water Navy Vietnam Veterans Act of 2019.
va.gov/housing-assistance →Debt-to-income guidelines, PMI cancellation rules under the Homeowners Protection Act, and mortgage payment component definitions used across all calculators.
consumerfinance.gov/owning-a-home →Conventional loan underwriting DTI limits and amortization methodology. Sourced from the Fannie Mae Selling Guide, Chapter B3-6 (Liability Assessment).
selling-guide.fanniemae.com →What Each Calculator Includes
Most mortgage calculators compute only principal and interest. Every tool on this platform goes further.
Full PITI Payment
Principal, interest, property taxes, and homeowners insurance — all four components a lender will collect monthly through escrow, not just the P&I payment typically advertised.
PMI with Auto-Cancellation
PMI is calculated monthly on the declining balance and removed from the amortization schedule in the exact month the loan balance reaches 80% of the original purchase price — consistent with the Homeowners Protection Act.
FHA & VA Loan Specifics
The FHA calculator applies the current 1.75% UFMIP and annual MIP per HUD ML 2023-05. The VA calculator applies the 2026 funding fee schedule including full exemption logic for qualifying veterans.
Full Amortization Schedule
A complete year-by-year breakdown of principal paid, interest paid, cumulative interest, and remaining balance for the full loan term. Includes a printable mortgage receipt.
Refinance Break-Even Analysis
Calculates the exact break-even month (closing costs ÷ monthly payment savings) alongside lifetime interest savings and a clear verdict on whether refinancing is financially advantageous given the borrower's planned stay.
Home Affordability Calculator
Uses an iterative binary-search algorithm to find the maximum home price within the borrower's DTI constraints — applying the standard 28% front-end and configurable back-end limit per Fannie Mae underwriting guidelines.
Our Editorial Principles
The standards that govern every decision made on this platform.
Completeness over simplicity
A calculator that omits real costs is not simpler — it is misleading. Every component a lender will charge is included so the total a user sees reflects what they will actually owe each month.
No commercial motivation to misrepresent
This platform may earn revenue from lender referrals, affiliate commissions, or advertising of any kind. There is no financial incentive to present a lower payment than what is mathematically accurate.
Full transparency as a standard, not a disclaimer
The Methodology page documents every formula and data source in detail — not as a legal formality, but because a financial calculator that cannot show its work should not be trusted with financial decisions.
Zero data collection
Every calculation is executed locally in the user's browser via JavaScript. No input data is transmitted to a server, logged, stored, or associated with any individual under any circumstance.
Full Methodology Available for Review
Every formula, regulatory rate table, assumption, and known limitation for each calculator is documented in plain language on our Methodology page. Users, journalists, and financial professionals are encouraged to verify any result this platform produces.
Meet the Founder
Malik Mohammad Junaid
Founder & Financial Tools Analyst
Malik Mohammad Junaid is the founder and lead analyst behind mortgagecalculatorus.net. He specialises in building digital financial tools that combine regulatory accuracy with real-world usability — helping home buyers navigate the mortgage process without misleading estimates or hidden assumptions.
Every calculator on this platform is built on formulas he personally sourced and verified from official US government documents — HUD mortgagee letters, VA circulars, CFPB guidelines, and the Fannie Mae Selling Guide. His focus is on giving buyers the exact numbers lenders use, not ballpark figures designed to look attractive.
Ready to Calculate Your Payment?
Use the free mortgage calculator to see your complete monthly payment — principal, interest, taxes, insurance, PMI, and HOA all included. No account or sign-up required.
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