All Calculators
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Every calculator is free, instant, and built for real borrowers — not just generic estimates.
Mortgage Payment
Monthly payment with tax, insurance & PMI
Affordability
How much home can you qualify for?
Refinance Analysis
Break-even, savings & amortization
Debt-to-Income
Front-end & back-end DTI with gauge
Lenders check this
Extra Payment
How much time & interest you save
Rent vs. Buy
True 5-year cost comparison
DSCR Calculator
Investment property cash flow analysis
Investors
SBA Loan
7(a) & 504 payment estimator
Business
Business Qualifier
Overall business loan readiness score
Business
Mortgage Payment Calculator
Estimate your full monthly payment including taxes and insurance
Total Monthly
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All-in payment
Principal & Interest
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Loan payment
Tax + Insurance
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Monthly escrow
Total Interest
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Over loan life
| Year | Principal | Interest | Balance |
|---|
Results are estimates. Actual payments may vary. PMI applies when down payment is under 20%. CA DRE #01480904 · NMLS #300923
Max Home Price
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Estimated purchase price
Max Loan Amount
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Based on DTI
Max Monthly Payment
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P&I only
DTI Used
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Of gross income
Qualification depends on credit score, loan type, reserves, and lender guidelines. Contact SI MTG for a personalized pre-qualification.
Current Loan
New Loan
Current Payment
—
Per month
New Payment
—
Per month
Monthly Savings
—
In your pocket
Break-Even
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Months to recover costs
| Year | Principal | Interest | Balance |
|---|
For illustrative purposes only. CA DRE #01480904 · NMLS #300923
Front-End DTI
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Housing costs only
Back-End DTI
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All debts
Total Housing
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Per month
Total All Debts
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Per month
0%28%43%65%+
Front-end DTI: housing ÷ income. Back-end DTI: all debts ÷ income. FHA allows up to ~57% back-end with compensating factors.
Interest Saved
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Total savings
Time Saved
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Years & months early
Original Payoff
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Without extra
New Payoff
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With extra payment
Assumes extra payment applied to principal. Verify with your lender that extra payments are credited correctly.
Buy — Net Cost
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After equity & appreciation
Rent — Net Cost
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Total rent paid
Equity Built
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From buying
Appreciation Gain
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Estimated home value gain
Simplified model. Does not include maintenance, HOA, or tax deductions. Consult SI MTG for a personalized analysis.
DSCR Ratio
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Target: ≥ 1.25
Net Operating Income
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Per month
Debt Service
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Monthly payment
Effective Gross Income
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After vacancy
DSCR = NOI ÷ Annual Debt Service. Most lenders require 1.20–1.25 minimum. CA DRE #01480904 · NMLS #300923
Monthly Payment
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Estimated
Down Payment
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Required equity
SBA Guarantee Fee
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Est. ~2.77%
Total Interest
—
Over loan life
| Year | Principal | Interest | Balance |
|---|
SBA 7(a) variable rate = WSJ Prime + spread. Verify current Prime rate. CA DRE #01480904 · NMLS #300923
Business Loan Readiness
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—
Score is for planning only and does not represent a credit decision. Contact SI MTG for a full assessment.
Why SI MTG
Not just a calculator. A coaching team.
Unlike generic calculator sites that send you nowhere, every result here connects you with a licensed mortgage coach.
30+ Loan Programs
FHA, Conventional, NonQM, DSCR, Bank Statement, ITIN, Foreign National, SBA, Hard Money — one place.
15-Day Average Close
Residential loans closed in as few as 15 days. Commercial 50 days. We anticipate every hurdle before it happens.
Lowest Yield Spread
We shop 50+ lenders to get you the most competitive rate available. You always get our best, not just a bank's best.
Every Borrower Welcome
ITIN? Foreign national? Self-employed? Low credit? We've closed loans that 3 other lenders refused. We find your path.
Full SBA Coaching
First-time SBA borrowers coached start to finish. Business plan, projections, lender narrative — we handle it all.
Free Monthly Seminars
Education first. No pressure. Monthly workshops for first-time buyers, investors, SBA applicants, and more.
Also try: Closing Cost Calculator
One of the most searched mortgage questions — answered instantly at our dedicated tool.
Ready to move forward?
Every Borrower Has a Path. We Find Yours.
You've run the numbers. Now let a licensed SI MTG coach review your scenario, find the best program, and get you to close fast.
CA DRE #01480904 · NMLS #300923 · Equal Housing Lender · 44840 S Grimmer Blvd, Fremont CA 94538