Creator & Quantitative Maintainer
Elena Farrow
Amortio is built and maintained by Elena Farrow, a fixed-income quantitative analyst who got tired of mortgage calculators that hide PMI drop-off thresholds, property tax escrow adjustments, and lender origination points behind lead-generation forms.
Elena Farrow
Founder & Lead Fixed-Income Quantitative Analyst
Before launching Amortio, I worked on residential whole-loan pricing and prepayment modeling, where a two-basis-point rounding error in monthly compounding or an off-by-one day-count convention (30/360 vs. Actual/365) could throw off portfolio cash flows by tens of thousands of dollars. When friends asked me to review their loan estimates, I noticed almost every consumer mortgage calculator on the web either ignored private mortgage insurance (PMI) termination at 78% LTV or miscalculated how recurring extra principal payments shorten the amortization tail.
I built Amortio so homebuyers and homeowners could inspect the exact month-by-month amortization ledger on their own machine—without handing their phone number to a mortgage broker lead farm. Every calculator on this site runs locally in your browser and exposes the full principal, interest, escrow, and cumulative interest saved at every payment period.
How Amortio Models Loan Cash Flows
1. Exact Period-by-Period Curtailment Accounting
Rather than using rough curve approximations for extra payments, Amortio iterates month by month through the remaining principal balance, applying one-time, annual, or monthly principal curtailments directly to the unpaid balance and recalculating the final payoff month and exact interest saved.
2. True PITI + PMI & HOA Modeling
Principal and interest are only part of housing cost. Our mortgage engines separately track property taxes, homeowners insurance, HOA dues, and automatic PMI removal once scheduled or accelerated equity crosses the 20%/22% Homeowners Protection Act threshold.
3. Zero Lead-Gen Forms
Amortio does not sell borrower leads, broker referrals, or credit inquiries. You never have to enter an email address or phone number to view your full 360-month amortization schedule.
Found a Discrepancy Against Your Loan Estimate?
If your lender's Closing Disclosure or amortization table uses a specific compounding convention or escrow rule you want checked, send the details over.