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Learn about partial-month charges and credits

Find out how changing your plan or add-ons between bill periods affects your next bill.

Partial-month charges

If you change your plan or add-ons in the middle of a bill period, you’ll see partial-month charges or credits on your next bill. See what’s different on your bill

Calculate your partial-month charges

For example, you switch from a plan that costs $45 a month to one that costs $60. You make this change 10 days into your bill period.

  1. Find the daily charge for both your old and new plans. Just divide your monthly price by 30 days (every bill period is 30 days).
    • Old plan: $45 a month ÷ 30 days = $1.50 a day
    • New plan: $60 a month ÷ 30 days = $2.00 a day
  2. Figure out how much each plan costs for the days you used it. Multiply the daily cost by how many days each plan was active.
    • Old plan: $1.50 a day x 10 days active = $15
    • New plan: $2.00 a day x 20 days active = $40
  3. Determine your partial-month credits or charges. We bill monthly recurring charges in advance for most plans, but bill some afterward.
    • If you pay ahead (in advance), you already paid $45 for the full month of your old plan. You’ll get $30 back for the 20 days you didn’t use ($1.50 x 20). Your next bill will show a:
      • $30 credit for the old plan
      • $40 charge for 20 days on the new plan
      • $60 charge for the next full month of the new plan
    • If you pay after you use the plan (in arrears), your next bill will show a:
      • $15 partial-month charge for 10 days on the old plan ($1.50 x 10)
      • $40 partial-month charge ($40) for 20 days on the new plan ($2.00 x 20)

Tip: Schedule your new plan or add-on to start on the first day of your next bill period to avoid partial-month charges.

Last updated: December 17, 2025

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