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The best Xfinity deal is the lowest total-cost offer that meets your household’s needs at your address. Start with an address-qualified quote, then compare its price guarantee, equipment, installation and billing conditions. A ZIP result is a starting point; it does not confirm service at every home.
Compare the offer you can actually order
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Open the Xfinity plans and availability page to take the next step. Confirm the exact street address and unit before choosing a plan. Save the written order summary: the offer attached to that order matters more than a national advertisement. Ask whether the advertised rate applies through the ordering channel you are using.
On September 16, Xfinity's public page advertised the following new-customer internet offers. Xfinity says this promotion ends September 21, 2026, so recheck before ordering. A stored-bank-account AutoPay method and paperless billing are required; taxes and fees are extra. The five-year guarantee covers the base internet rate, not every charge.
| Current public tier | Published base price | Published period |
|---|---|---|
| 300 Mbps | $40/month | Five-year base-rate guarantee if eligible |
| 500 Mbps | $45/month | Five-year base-rate guarantee if eligible |
| 1 Gig | $50/month | Five-year base-rate guarantee if eligible |
Check Xfinity plans at your address beside the published examples. The approved regular-internet order path is for standard Xfinity service; to buy prepaid NOW, use Xfinity's separate NOW eligibility and signup.
Price-guarantee internet or prepaid NOW?
| What to compare | Xfinity five-year price-guarantee offer | NOW prepaid internet |
|---|---|---|
| Price protection | The published guarantee covers the base internet rate for 60 months; regular rates apply afterward. | Prepaid pricing is subject to change. It is not a lifetime price guarantee. |
| Equipment and data | Xfinity lists WiFi equipment and unlimited data as included in the offer. | A refurbished gateway is included and requires self-installation. |
| Billing and eligibility | For eligible new internet customers. The advertised rate requires paperless billing and automatic payments from a stored bank account. | No credit check. Autopay, paperless billing and online card payments are required. |
| Extra costs | Taxes, fees and installation charges are outside the guaranteed base rate and can change. | Taxes and fees are included in the published NOW internet price. |
| Commitment | No annual contract under the published guarantee terms. | No annual contract; availability still needs confirmation. |
These are the terms described on the official pages reviewed September 16, 2026. Confirm that your selected offer includes them. A separate mobile promotion has its own eligibility and duration; an internet price guarantee does not extend a mobile discount.
Choose speed around what you do at the same time
Compare the lowest available tier that fits your simultaneous streaming, calls and downloads before paying for more speed. A larger download number alone does not establish better value for your household. If you upload large files or make video calls, ask for the upload speed in the address-specific quote; do not infer it from the download tier.
Xfinity’s official offer page describes a fiber-powered network connected to premises by coaxial cable. That description does not establish a fiber-to-the-home connection at your address. Confirm the connection type if it affects your choice.
A quick total-cost worksheet
For each written quote, record the base monthly rate, guaranteed period, equipment charge, required discounts, installation cost and any separately priced services. Compare the same period for every provider. For example, twelve months of a hypothetical $5 monthly add-on adds $60 to the first-year cost; include it even if the headline internet rate looks lower.
Leave any undisclosed future rate marked “not supplied.” Ask the provider to clarify it instead of estimating a precise two-year total from incomplete terms. Keep the order summary so you can check the first bill against it.
Already an Xfinity customer?
Check the offers available through your existing account or contact Xfinity about your current plan. Ask how an offer changes your monthly cost and any discounts you already receive. Do not assume that cancelling and signing up under another household member’s name makes you eligible for a new-customer promotion; eligibility must be confirmed by Xfinity.
Compare alternatives before deciding
The NOW prepaid guide provides more context for prepaid service. Use Spectrum versus Xfinity and Verizon versus Xfinity to organize a comparison, then verify each provider’s current address-qualified terms.
For local research, explore Chicago internet options or Houston internet options. You can also browse the provider directory and internet buying guides.
Sources and review
Source review: September 16, 2026 (Central Time). This update used AI-assisted drafting and source checking. It compares published terms; no service installation or household eligibility test was performed. See our comparison methodology.
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