Internet Cost Calculator
Calculate your true monthly and total internet cost across promotional periods, post-promo rate increases, router/modem rental fees, taxes, and setup charges.
Internet Plan & Contract Details
Total over 24 months: $2,078.00
Total & Average Internet Contract Cost Formula
Total Period Cost = (Promo Months ร Promo Monthly Total) + (Regular Months ร Regular Monthly Total) + Setup Fee- Promotional Monthly Total = Promotional Plan Price + Monthly Equipment Rental + Monthly Taxes & Fees.
- Regular Monthly Total = Regular Plan Price + Monthly Equipment Rental + Monthly Taxes & Fees.
- Average Monthly Cost = Total Cost Over Selected Period รท Contract Duration Months.
Step-by-Step Worked Example
Calculation Steps:
- Promo Monthly Total (Months 1โ12) = $55.00 + $15.00 + $4.50 = $74.50/mo ($894.00 for 12 mos)
- Regular Monthly Total (Months 13โ24) = $75.00 + $15.00 + $4.50 = $94.50/mo ($1,134.00 for 12 mos)
- Total 24-Month Cost = $894.00 + $1,134.00 + $50.00 setup = $2,078.00 ($86.58/mo average)
How to Use This Calculator
- 1Enter the regular monthly plan price, monthly router/modem rental fee, and recurring taxes/fees.
- 2If your ISP offers an introductory promotional price, enter the promo monthly rate and number of promo months.
- 3Enter any one-time installation or activation fee and the total number of months you want to evaluate.
Assumptions & Limitations
- Assumes equipment rental and monthly taxes apply equally during both promotional and regular billing months.
- If promotional duration exceeds the selected evaluation period, all evaluated months use the promotional rate.
Frequently Asked Questions
Why is my actual internet bill higher than the advertised price?
Advertised ISP rates usually exclude $10โ$18/month Wi-Fi gateway rental fees, state/local telecom surcharges, and post-promotional rate step-ups after month 12.
Is buying my own router and modem cheaper than renting?
At $15/month ($180/year), a purchased $150 router/modem typically breaks even in 10 months, saving $210 over a 24-month period.
How do I compare a no-promo plan against a 12-month promo plan?
Set the evaluation period to 24 or 36 months and compare the Average Monthly Cost metric, which blends both the intro discount and the subsequent regular rate.
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