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Example output · Mortgage Broker AI

What the Rate Comparison Generator actually produces

Takes loan amount, term, and rate/points/fee quotes from multiple lenders and builds a side-by-side cost table with a recommendation and a client-ready summary.

Real output from this tool's prompt3-lender rate comparison for a purchase loanGenerated 2026-08-29
The input
Loan Amount:
$425,000
Loan Term:
30-year fixed
Rates:
Lender A: 6.375% (0.5 pts, $1,200 fees); Lender B: 6.5% (0 pts, $950 fees); Lender C: 6.25% (1 pt, $1,500 fees)
Borrower Profile:
Credit score 742, W-2 income $118k/yr, 20% down payment, purchasing primary residence
Side-by-side rate/fee/payment table

RATE COMPARISON — $425,000 / 30-Year Fixed

| Item | Lender A | Lender B | Lender C |
|---|---|---|---|
| Rate | 6.375% | 6.5% | 6.25% |
| Points | 0.5 pt | 0 pts | 1 pt |
| Lender Fees | $1,200 | $950 | $1,500 |
| Principal | $425,000 | $425,000 | $425,000 |
| Term | 360 months | 360 months | 360 months |
| Monthly P&I | $2,651 (exact, per computed figures) | NOT PROVIDED — no computed P&I figure was supplied for this rate/term combination | NOT PROVIDED — no computed P&I figure was supplied for this rate/term combination |
| Total of Payments (full term) | $954,519 (exact) | NOT PROVIDED | NOT PROVIDED |
| Total Interest (full term) | $529,519 (exact) | NOT PROVIDED | NOT PROVIDED |
| Upfront Costs at Closing | $1,200 | $950 | $1,500 (plus 1 discount point — dollar cost of the point itself not stated in inputs; verify) |
| Total Cost (payments + upfront) | $955,719 (exact) | NOT PROVIDED | NOT PROVIDED |
| APR | Verify in Loan Estimate / LOS | Verify in Loan Estimate / LOS | Verify in Loan Estimate / LOS |
| PMI/MIP | Verify in Loan Estimate / LOS (20% down suggests PMI may not apply, but this must be confirmed against investor/program guidelines) | Verify in Loan Estimate / LOS | Verify in Loan Estimate / LOS |

IMPORTANT NOTE ON LENDERS B AND C: Only Lender A has a full set of computed amortization figures (Monthly P&I, Total of Payments, Total Interest) supplied as tested-calculator output. Lender B and Lender C rates, points, and fees were provided, but no corresponding computed P&I / total-of-payments / total-interest figures were supplied for them. Per the arithmetic rule governing this analysis, those figures must NOT be estimated, recomputed, or derived here — they need to be run through the same tested amortization calculator before they can be presented as authoritative. Field needed: computed Monthly P&I, Total of Payments, and Total Interest outputs for Lender B (6.5%, 0 pts, $950 fees, $425,000, 360 mo) and Lender C (6.25%, 1 pt, $1,500 fees, $425,000, 360 mo).

Additional fields needed for a complete, apples-to-apples comparison across all three lenders: exact APR for each offer, dollar cost of Lender C's 1 discount point, PMI/MIP applicability and monthly cost (if any) confirmed under current program rules, estimated cash-to-close for each option, and the borrower's anticipated holding period (years expected in the home / before refinancing).

Broker-facing analysis and gaps to fill

A ranked recommendation cannot be responsibly issued at this time. The comparison currently supports a side-by-side review of Lender A's terms only, because Lender A is the sole option with complete, exact computed figures (Monthly P&I $2,651; Total of Payments $954,519; Total Interest $529,519; Total Cost $955,719 — all copied verbatim from tested-calculator output). Lender B and Lender C have known rates, points, and fees, but their P&I and total-cost figures still need to be generated by the amortization calculator before a true cost comparison is possible. Even once those figures are available, a full recommendation would still require: (1) exact APR for all three offers, since points and fees affect effective cost differently across lenders; (2) confirmation of whether PMI/MIP applies at 20% down under the specific program and investor guidelines (verify against current rules); (3) the dollar cost of Lender C's discount point and how that trades off against its lower rate over the borrower's expected holding period; (4) estimated cash-to-close for each lender, since Lender C's higher fees plus a point will increase upfront cash needed relative to Lender B; and (5) the borrower's anticipated time horizon in the home, which determines whether a lower rate purchased with points (Lender C) or a no-point/lower-fee option (Lender B) is more cost-effective. Framework for decision once complete figures are supplied: compare (a) total cash required at closing, (b) monthly payment, (c) total cost of the loan over the expected holding period (not necessarily the full 30-year term), and (d) break-even period for any points paid, against the client's liquidity, cash-flow priorities, and how long they expect to hold this loan. This should be treated as a discussion framework, not a final suitability determination, until the missing figures and client preferences are confirmed.

Plain-language summary to share with borrower

Here's where things stand on your three rate options for a $425,000, 30-year fixed loan: For Lender A (6.375% rate, 0.5 points, $1,200 in fees), we have exact numbers from the amortization calculator: your monthly principal-and-interest payment would be $2,651, and over the full 30-year term you'd pay $954,519 in total payments (of which $529,519 is interest). Adding the $1,200 in upfront closing costs brings the total cost of this loan over its full life to $955,719. These are precise, calculator-verified figures — not estimates. For Lender B (6.5%, 0 points, $950 in fees) and Lender C (6.25%, 1 point, $1,500 in fees), we have the rate and fee information, but the corresponding monthly payment and total-cost figures haven't been run through the calculator yet. Rather than guess at those numbers, we want to generate them the same precise way we did for Lender A before comparing all three side by side — that's the only way to give you an apples-to-apples comparison you can rely on. A few other things to keep in mind: the Annual Percentage Rate (APR) for each offer — which factors in points and fees to show a more complete cost picture — still needs to be pulled from each Loan Estimate. Similarly, whether mortgage insurance (PMI) applies with your 20% down payment depends on the specific loan program's current rules, so that should be confirmed rather than assumed. Before we can point you toward one lender over another, it would help to know how long you expect to keep this loan (a few years vs. staying long-term), since that affects whether paying points upfront (like Lender C's 1 point) pays off compared to a no-point option (Lender B). We'd also want to confirm your estimated cash needed at closing for each option, since Lender C's combination of a point and higher fees means more cash due upfront. Rate lock timing is also worth discussing: none of these quoted rates are locked yet, so if there's any delay before you're ready to proceed, double-check whether the lender's quote is still valid, and ask each lender about their current lock period and any lock-extension costs. Once we have the missing calculator figures, exact APRs, and a clearer sense of your expected time in the home, we can put together a complete, side-by-side comparison to help guide your decision.

What to edit for your situation

Swap in your actual lender quotes, loan amount, and borrower profile, and don't send anything to a client until every monthly payment, total-cost, and APR figure has been run through your amortization calculator and confirmed — the sample output deliberately shows what happens when some of that data is missing.

Human review: This is a drafting aid, not a substitute for your loan origination system or the lender's official Loan Estimate — verify every rate, APR, fee, and PMI determination before presenting figures to a borrower.

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