How to Use This Calculator
- 1
Enter Vehicle & Loan Details
Input the vehicle cost, down payment, trade-in value, interest rate, loan term, sales tax rate, and registration fees.
- 2
Review Results
See Monthly Payment, Total Interest Paid, and Total Cost of Ownership cards. The Insights panel shows total monthly cost breakdown, loan amount financed with LTV ratio, interest-to-loan ratio, down payment percentage, taxes/fees added, and total loan payments.
Example Calculation
A security firm finances a $150,000 armored vehicle with a $30,000 down payment, 6.5% interest over 84 months, 5% sales tax, $500 registration, $3,000/year insurance, and $2,000/year maintenance.
Vehicle Cost ($)
150,000
Down Payment ($)
30,000
Trade-In Value ($)
0
Interest Rate (%)
6.5
Loan Term (months)
84
Sales Tax Rate (%)
5.0
Registration Fees ($)
500
Annual Insurance ($)
3,000
Annual Maintenance ($)
2,000
Results
Monthly Payment
$1,900.73
Total Interest Paid
$31,661.14
Total Cost of Ownership
$224,661.14
Insights card shows $2,317.
Tips
$8,000 in Sales Tax and Fees Adds 6.7% to Your Loan Balance
The $7,500 sales tax and $500 registration fees are rolled into the $128,000 loan — $8,000 more than the $120,000 net vehicle price. Over 84 months at 6.5%, that $8,000 generates an additional $1,979 in interest, costing you $9,979 total.
A 60-Month Term Saves $9,393 in Interest vs. 84 Months
Shortening from 84 to 60 months raises the monthly payment from $1,900.73 to $2,504.47, but total interest drops from $31,661.14 to $22,268.02. The interest-to-loan ratio improves from 24.7% to 17.4%.
Insurance and Maintenance Add $35,000 Over the 7-Year Term
At $3,000/year insurance and $2,000/year maintenance, ongoing costs total $35,000 over 84 months — more than the $31,661 in interest. The total monthly cost of $2,317.39 is 22% higher than the $1,900.73 loan payment alone.
Increasing Down Payment to $45,000 Saves $3,710 in Total Interest
A $45,000 down payment (30% vs 20%) reduces the loan to $113,000 and monthly payment to $1,678.00. Total interest drops from $31,661 to $27,951, and the LTV improves from 85.3% to 75.3%, potentially qualifying for better rates.
Armored Vehicle Loan Payment Breakdown
The Armored Vehicle Loan Payment Calculator shows the true cost of financing a security vehicle.
A $150,000 armored vehicle with a $30,000 down payment financed at 6.5% over 84 months results in a monthly payment of $1,900.73, $31,661.14 in total interest, and a total ownership cost of $224,661.14 — 49.8% more than the sticker price.
The Loan Payment Formula
Sales Tax = (Vehicle Cost - Trade-In) x Tax Rate
Loan Amount = Vehicle Cost - Down Payment - Trade-In + Sales Tax + Registration Fees
Monthly Payment = Loan Amount x [r(1+r)^n] / [(1+r)^n - 1]
Where r = Annual Rate / 12 / 100, n = Loan Term in months
Total Interest = Monthly Payment x n - Loan Amount
Total Ownership = Down Payment + (Monthly Payment x n) + (Insurance x Years) + (Maintenance x Years)
Example: $150,000 Armored Vehicle Over 84 Months
$150,000 vehicle, $30,000 down, 6.5% rate, 84 months, 5% sales tax, $500 registration, $3,000/year insurance, $2,000/year maintenance:
| Metric | Value | Context |
|---|---|---|
| Monthly Payment | $1,900.73 | Competitive rate — 7-year term |
| Total Interest Paid | $31,661.14 | Moderate interest burden (24.7% ratio) |
| Total Cost of Ownership | $224,661.14 | Over 7-year term including all costs |
| Loan Amount Financed | $128,000 | 85.3% loan-to-value |
| Total Monthly Cost | $2,317.39 | Payment + insurance + maintenance |
| Insurance + Maintenance | $35,000 | Over 7 years ($5,000/year) |
The $8,000 in sales tax and registration fees rolled into the loan generates an additional $1,979 in interest over 84 months.
The $35,000 in insurance and maintenance costs exceed the $31,661 in interest — making ongoing ownership the largest hidden cost.
Why Total Ownership Far Exceeds the Purchase Price
The gap between the $150,000 sticker price and $224,661 total ownership cost ($74,661 or 49.8% more) comes from four sources: interest ($31,661), insurance ($21,000), maintenance ($14,000), and taxes/fees ($8,000).
Unlike standard vehicles where insurance runs $1,000-$2,000/year, armored vehicles require $3,000-$10,000+ annually due to their high value and specialized coverage.
The 24.7% interest-to-loan ratio means nearly a quarter of the principal is paid again in interest — a direct consequence of the 84-month term at 6.5%.
Frequently Asked Questions
How is the loan amount calculated?
Loan Amount = (Vehicle Cost - Down Payment - Trade-In) + Sales Tax + Registration Fees. Sales tax is applied to (Vehicle Cost - Trade-In). For this example: ($150,000 - $30,000 - $0) + ($150,000 x 5%) + $500 = $120,000 + $7,500 + $500 = $128,000.
What does the interest-to-loan ratio mean?
It's the total interest divided by the loan principal: $31,661 / $128,000 = 24.7%. This shows you'll pay 24.7 cents in interest for every dollar borrowed. Under 20% is low burden, 20-40% is moderate, above 40% suggests the term is too long or rate too high.
Why is total ownership cost so much higher than the vehicle price?
Total ownership includes down payment ($30,000) + all loan payments ($159,661) + insurance ($21,000 over 7 years) + maintenance ($14,000 over 7 years) = $224,661. That's 49.8% more than the $150,000 purchase price. Interest, insurance, and maintenance add $74,661.
How do armored vehicle loan rates compare to standard auto loans?
Armored vehicles typically carry rates 1-3% higher than standard auto loans due to limited resale markets, higher values, and specialized risk profiles. In 2026, expect 6-10% for armored vehicles vs 5-7% for standard auto loans. Larger down payments (20%+) help secure better rates.
Should I choose a shorter or longer loan term?
Shorter terms mean higher monthly payments but dramatically less interest. At $128,000 and 6.5%: 60 months costs $22,268 in interest (17.4% ratio), 72 months costs $26,920 (21.0%), and 84 months costs $31,661 (24.7%). Choose the shortest term your budget allows.
What's included in total cost of ownership vs total loan cost?
Total loan cost is just the sum of all monthly payments: $1,900.73 x 84 = $159,661. Total cost of ownership adds the down payment ($30,000) plus insurance ($21,000) and maintenance ($14,000) over the loan term: $159,661 + $30,000 + $21,000 + $14,000 = $224,661.