AT&T says that when a promotional period ends, the credits from that promotion stop and the bill increases by that amount.
AT&T Internet bill guide
Why did my AT&T Internet bill go up?
Compare consecutive AT&T Internet statements to see whether a promotion ended, a plan or add-on changed, or a fee, adjustment, or partial-month charge appeared.
Compare my AT&T Internet bills freeBillDiff is independent and is not affiliated with AT&T Internet.
What to check
Four places the increase may be hiding.
Plan and add-on changes can create partial-month charges or credits, so the first bill after a change can differ from the normal recurring amount.
Late-payment, restoration, activation, and other applicable fees can affect the amount due depending on the account activity.
Credits and billing adjustments can post in a later cycle. Compare the older and newer credit sections before assuming the base internet price changed.
Statement comparison
Use the bill before the increase and the bill after it.
Review the current and previous AT&T statements for promo credits, plan or add-on changes, partial-month charges, fees, and adjustments. Dated notices are especially useful for forecasting a known change.
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Source transparency
Official provider references used for this guide.
These references explain provider billing practices. They do not prove that a particular change happened on your account; your BillDiff result is based on the statements you upload.
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More AT&T Internet help
Use the provider page or compare the statements now.
Questions
AT&T Internet bill increase FAQ
What happens when an AT&T promotion ends?
AT&T states that credits associated with the promotion stop when the promotional period ends, which increases the bill by the amount of those credits.
Why is my first AT&T bill after a plan change different?
Plan or add-on changes can produce partial-month charges or credits. Comparing the next statement helps determine the stable recurring amount after the adjustment.
How does BillDiff check a AT&T Internet bill increase?
BillDiff compares supported consecutive statements, reconciles the previous and current totals, identifies changed line items, and checks the statement for known dated billing changes.
Does BillDiff save my original bill?
BillDiff processes the original statement for the comparison and does not save the original bill. Optional non-identifying contribution is off by default.