BL // MORTGAGE

Property Intelligence System

Version 1 Properties
FIXED RATE
Current Rate
fixed until
Base Assumption After Fix
expected remortgage rate
Worst Case After Fix
stress test scenario
Monthly Overpayment
above contractual
Key Figures
Outstanding Balance
Projected Payoff (Base)
Total Overpaid To Date
Equity
Total Interest Remaining (Base)
Monthly Total Out
payment + overpayment
This Month's Payment Breakdown
Interest vs Capital vs Overpayment
Property Equity
Ownership vs Remaining Mortgage
Payoff Scenarios
Projected Payoff by Scenario
Contractual end vs base assumption vs worst case
Balance Over Time
Annual balance — base scenario
Next 24 Months — Payment Split
Interest · Capital · Overpayment
Overpay vs Invest
What does your £/month overpayment really do?
Interest saved (guaranteed) vs Investment profit (assumed % annual return)
BL // MORTGAGE
PROPERTY INTELLIGENCE SYSTEM
UPDATED 2026-03-28
CURRENT RATE 4.54% FIXED
FIXES UNTIL Jul 2027
BASE ASSUMPTION AFTER FIX 4.50%
WORST CASE AFTER FIX 6.00%
OVERPAYMENT £250/mo
Outstanding Balance
£173,019.09
as of 2026-03-28
Projected Payoff (Base)
Dec 2040
5 yrs 6 mo earlier vs contractual
Total Overpaid To Date
£9,350
£14,917 interest saved · 22 months off term
Equity
£226,981
56.7% of property value
This Month's Payment Breakdown
Interest
£654.59
Capital
£432.02
Overpayment
£250.00
Total Monthly Out £1,336.61
Property Equity
56.7% yours
£226,981
Your Equity
£173,019
Mortgage Remaining
£110,000
Gain vs Purchase
Property Value
£400,000
Payoff Scenarios
Scenario Projected Payoff vs Contractual Total Interest Notes
Contractual (no overpay) Jul 2048 £91,111 No overpayments, base rate after fix
Base — 4.5% after fix ✓ Dec 2040 5 yrs 6 mo earlier £64,410 £250/mo overpay, remortgage at similar rate
Worst Case — 6.0% after fix Jan 2043 £97,452 Rates spike to 6.0% from Jul 2027
Balance Over Time (Base Scenario)
Next 24 Months — Payment Split
Overpay vs Invest — What does £250/month really do?
Assumes 8% annual investment return. Interest saved = guaranteed; investment return = assumed.
5 YEARS
Interest saved
£1,803
Investment profitWIN
£3,492
Total deployed: £15,000 | Invest pot: £18,492
10 YEARS
Interest saved
£7,880
Investment profitWIN
£16,041
Total deployed: £30,000 | Invest pot: £46,041
20 YEARS
Interest saved
£27,208
Investment profitWIN
£88,237
Total deployed: £60,000 | Invest pot: £148,237