Up to 4 scenarios · calculated privately in your browser
Extra-payment strategy
Saved
Scenario A — no extras versus Scenario B — $400/mo extra·Compared on Principal & interest
Extra-payment strategy · Current mortgage → Proposed refinance
Paid off 9 yr sooner
Adding $400.00 a month to principal saves an estimated $159,602 of interest — the required payment does not change.
Interest saved by 5 years
+$3,908
$116,110 → $112,202
Balance at 5 years
−$27,908
$372,218 → $344,310
Scenario A — no extras
current loan
$400,000 loan · 6.00% · 30 yr
Principal & interest
compared
$2,398.20
the loan payment itself
Estimated total housing payment
$2,398.20
P&I $2,398.20 + MI not confirmed
Planned payment
$2,398.20
no recurring extra principal
Compared on principal & interest until the mortgage insurance status is confirmed on both loans.
Total interest
$463,354
Loan cost
$463,354
Payoff
30 yr · Aug 2056
Scenario B — $400/mo extra
$400,000 loan · 6.00% · 30 yr
Principal & interest
compared
$2,398.20
the loan payment itself
Estimated total housing payment
$2,398.20
P&I $2,398.20 + MI not confirmed
Planned payment
$2,798.20
incl. $400.00 extra principal
Compared on principal & interest until the mortgage insurance status is confirmed on both loans.
Total interest
$303,752
Loan cost
$303,752
Payoff
21 yr · Aug 2047
Recommended · lowest loan cost
Side-by-side comparison
Mortgage comparison report
Bolt Home Loans LLC · 2 scenarios · horizon: 5 years
Generated September 28, 2026
Lowest required payment (tied)
Scenario A — no extras · Scenario B — $400/mo extra
Least interest
Scenario B — $400/mo extra
Lowest loan cost
Scenario B — $400/mo extra
Scenario summary
Scenario
Loan
Rate
Term
P&I
Required / mo
Planned / mo
Upfront
Payments
Payoff
Total interest
Loan cost
Scenario A — no extras (baseline)
$400,000
6.00%
30 yr
$2,398.20
$2,398.20
$2,398.20
$0
360
Aug 2056
$463,354
$463,354
Scenario B — $400/mo extra
$400,000
6.00%
30 yr
$2,398.20
$2,398.20
$2,798.20
$0
252
Aug 2047
$303,752
$303,752
Required payment = principal & interest + that loan's mortgage insurance + property costs (taxes $0.00, insurance $0.00, HOA $0.00, maintenance $0.00). Planned payment adds recurring extra principal. Loan cost = net upfront costs + interest + mortgage insurance; principal repayment builds equity and property costs continue after payoff, so neither is counted. Mortgage insurance by scenario: Scenario A — no extras — No mortgage insurance; Scenario B — $400/mo extra — No mortgage insurance.
Results at 5 years
Scenario
Interest paid
Principal paid
Extra principal
MI paid
Cash paid
Economic cost
Balance remaining
Status
Scenario A — no extras
$116,110
$27,782
$0
$0
$143,892
$116,110
$372,218
5 yr in
Scenario B — $400/mo extra
$112,202
$55,690
$24,000
$0
$167,892
$112,202
$344,310
5 yr in
Break-even analysis vs Scenario A — no extras
Scenario
Required diff
Planned diff
Interest
Loan cost
Payoff
Break-even month
Scenario B — $400/mo extra
$0
+$400
−$159,602
−$159,602
9 yr sooner
Not applicable — extra-payment strategy
Break-even is the first month a scenario's economic cost (net upfront costs + interest + mortgage insurance) falls at or below the baseline's. It only applies when both scenarios finance the same principal and one pays more upfront for a lower rate; paying extra principal on identical terms has no closing-cost recoup period.
Extra-payment strategy
Scenario A — no extras
No extra principal payments — scheduled payments only.
Total extra principal $0 · payoff on schedule · interest $463,354
Scenario B — $400/mo extra
$400 every month from payment 1 until payoff
Total extra principal $100,400 · payoff 9 yr early · interest $303,752 · saves $159,602 vs baseline
Charts
Remaining balance over time
Scenario A — no extrasScenario B — $400/mo extra
Cumulative interest paid
Scenario A — no extrasScenario B — $400/mo extra
What this means for you
Client decision summary
Estimated cash to close: $0.00
No unfinanced costs, prepaids or borrower contribution are entered.
Monthly difference: +$400.00
Planned monthly outflow $2,398.20 → $2,798.20, including any recurring extra principal.
Required payment difference $0.00: $2,398.20 → $2,398.20
Break-even on cash spent: Not applicable — this plan increases planned payment
No unfinanced transaction costs are entered, so there is nothing to earn back.
5-year impact: $3,908 lower financing cost
Financing cost through Aug 2031: $116,110 → $112,202.
Balance after 5 years $372,218 → $344,310
Measure Current mortgage / Proposed refinance / Difference
Required payment $2,398.20 / $2,398.20 / $0.00
Planned monthly outflow $2,398.20 / $2,798.20 / +$400.00
Estimated cash to close — / $0.00 / —
Financing cost through 5 years $116,110 / $112,202 / −$3,908
Balance after 5 years $372,218 / $344,310 / −$27,908
Total interest $463,354 / $303,752 / −$159,602
Estimated payoff date Aug 2056 · 30 yr / Aug 2047 · 21 yr / 9 yr sooner
Benefits
Faster payoff (9 yr sooner) — Aug 2056 → Aug 2047.
Lower financing cost ($3,908) — Less financing cost through 5 years (upfront costs, interest and mortgage insurance).
More equity built ($27,908) — The balance is lower at the five-year mark, so more equity has been built by then.
Watch-outs
Higher monthly commitment (+$400.00) — Planned outflow $2,398.20 → $2,798.20, including extra principal, which is voluntary.
Estimated — not a Loan Estimate or Closing Disclosure.
Appendix — how these numbers were calculated
HOW THESE NUMBERS WERE CALCULATED
WHAT IS BEING COMPARED
Reference loan: Scenario A — no extras — every difference below is measured against this loan
Horizon: 5 years — 60 months — every scenario is counted through one shared calendar cutoff of August 2031, anchored on the earliest first payment (September 2026)
Like-for-like: yes — Every scenario finances the same starting principal, so interest, financing cost and break-even are directly comparable.
Largest difference in financed principal: $0
HOW EACH DIFFERENCE IS DEFINED
Payment difference: this loan's required payment − the reference loan's required payment
Interest difference: reference interest − this loan's interest, over the same number of months
Financing cost: net transaction cost + interest + mortgage insurance — principal is excluded because repaying principal is not a cost, and property costs are excluded because they continue either way
Break-even: the first month this loan's cumulative financing cost falls at or below the reference loan's and stays there — only reported when both loans finance the same principal
POSITION AT 5 YEARS
Scenario A — no extras: financing cost $116,110 — interest $116,110 · balance $372,218 · cumulative cash paid $143,892
Scenario B — $400/mo extra: financing cost $112,202 — interest $112,202 · balance $344,310 · cumulative cash paid $167,892
WHETHER A RECOMMENDATION IS SUPPORTED
Lowest-cost winner shown: yes — the loans finance the same principal and use programs this model handles fully
Payment winner shown: yes — monthly payment is comparable regardless of the amount financed
SCENARIO A — NO EXTRAS — CALCULATION DETAIL
Inputs as the engine read them
Financed loan amount (principal): $400,000
Annual interest rate: 6.00%
Monthly interest rate: 0.500000% — annual rate ÷ 12, carried at full precision and never rounded mid-schedule
Term: 30 years = 360 payments
First payment date: September 28, 2026
Loan program: conventional
Original property value: not entered — only used for the mortgage-insurance cancellation tests
Scheduled principal & interest
Formula: P × i ÷ (1 − (1 + i)^−n) — P = principal, i = monthly rate, n = number of payments. At a 0% rate it becomes P ÷ n.
Unrounded payment: 2398.202101
Billed payment used in the schedule: $2,398.20 — the unrounded payment rounded to the cent
Required monthly payment: $2,398.20 — P&I $2,398.20
Planned monthly payment: $2,398.20 — required payment + $0.00 of recurring extra principal
Fees, points and credits
Closing costs entered: $0
Discount points: 0% of $400,000 = $0
Lender credits: − $0
Net transaction (financing) cost: $0 — closing costs + points − lender credits; this is the only cost figure inside financing cost and break-even
Prepaids and initial escrow funding: $0
Borrower cash contribution to principal: $0
Cash due at closing: $0 — net transaction cost + prepaids/escrow + borrower contribution. The recoup ledger is measured against UNFINANCED TRANSACTION COSTS only, not against this cash figure.
Mortgage insurance
Monthly premium: none
How it ends: No monthly mortgage insurance is charged on this loan.
Total charged in this projection: $0
Extra-principal rules
Extra principal: none scheduled
First payment, dollar by dollar
Starting balance: $400,000.00
Interest: $2,000.00 — starting balance × 0.500000%
Principal: $398.20 — billed payment − interest
Extra principal: $0.00
Mortgage insurance: $0.00
Property costs: $0.00
Ending balance: $399,601.80
Payoff
Payments made: 360 (30 yr)
Payoff date: August 2056
Final payment adjustment: $2,400.31 — the last payment is trimmed to exactly retire the balance, so the ending balance is $0.00 with no rounding residue
Ending balance: $0.00
Reconciliation
Principal repaid equals the amount financed: reconciles
Financing cost = net transaction cost + interest + mortgage insurance: reconciles
Total paid = financing cost + principal + property costs: reconciles
Final ending balance is zero: reconciles
SCENARIO B — $400/MO EXTRA — CALCULATION DETAIL
Inputs as the engine read them
Financed loan amount (principal): $400,000
Annual interest rate: 6.00%
Monthly interest rate: 0.500000% — annual rate ÷ 12, carried at full precision and never rounded mid-schedule
Term: 30 years = 360 payments
First payment date: September 28, 2026
Loan program: conventional
Original property value: not entered — only used for the mortgage-insurance cancellation tests
Scheduled principal & interest
Formula: P × i ÷ (1 − (1 + i)^−n) — P = principal, i = monthly rate, n = number of payments. At a 0% rate it becomes P ÷ n.
Unrounded payment: 2398.202101
Billed payment used in the schedule: $2,398.20 — the unrounded payment rounded to the cent
Required monthly payment: $2,398.20 — P&I $2,398.20
Planned monthly payment: $2,798.20 — required payment + $400.00 of recurring extra principal
Fees, points and credits
Closing costs entered: $0
Discount points: 0% of $400,000 = $0
Lender credits: − $0
Net transaction (financing) cost: $0 — closing costs + points − lender credits; this is the only cost figure inside financing cost and break-even
Prepaids and initial escrow funding: $0
Borrower cash contribution to principal: $0
Cash due at closing: $0 — net transaction cost + prepaids/escrow + borrower contribution. The recoup ledger is measured against UNFINANCED TRANSACTION COSTS only, not against this cash figure.
Mortgage insurance
Monthly premium: none
How it ends: No monthly mortgage insurance is charged on this loan.
Total charged in this projection: $0
Extra-principal rules
Rule 1: $400.00 extra principal every month from payment 1 until payoff
First payment, dollar by dollar
Starting balance: $400,000.00
Interest: $2,000.00 — starting balance × 0.500000%
Principal: $398.20 — billed payment − interest
Extra principal: $400.00
Mortgage insurance: $0.00
Property costs: $0.00
Ending balance: $399,201.80
Payoff
Payments made: 252 (21 yr) — 9 yr earlier than the scheduled term
Payoff date: August 2047
Final payment adjustment: $1,404.07 — the last payment is trimmed to exactly retire the balance, so the ending balance is $0.00 with no rounding residue
Ending balance: $0.00
Reconciliation
Principal repaid equals the amount financed: reconciles
Financing cost = net transaction cost + interest + mortgage insurance: reconciles
Total paid = financing cost + principal + property costs: reconciles
Final ending balance is zero: reconciles
Explanation format 1.0.0.
Disclosure
All figures in this report are illustrative estimates calculated from the inputs provided and are not a loan offer, credit decision, pre-approval, rate lock, or financial advice. Property taxes, homeowners insurance, HOA dues, maintenance and mortgage insurance are estimates and may change; escrow adjustments, ARM rate changes, lender-specific fees, prepayment terms and tax effects are not modeled. Actual payments and payoff dates will differ. Please confirm every number with a licensed Bolt Home Loans LLC mortgage professional before making a decision. Report generated September 28, 2026.