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If you change your plan in the middle of the month, the fee will be calculated on a pro-rata basis.

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A. The difference from the change date to the end of the month will be charged on a pro-rata basis.

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Basic Calculation Rules

  • Denominator for calculation: The number of days in the month when the change occurs (e.g., January has 31 days, February has 28 or 29 days)
  • Rounding: If the calculation results in a decimal, it will be truncated

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In the case of an upgrade (monthly payment)

The difference from the change date to the end of the month will be charged immediately. Example: If you upgrade on May 15
  1. The difference for May 15 to 31 (17 days out of 31)
  2. From the following month, the monthly fee for the new plan will apply

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In the case of annual payment (fixed update date rule)

  • The next update date is based on the date when the paid plan was initially contracted.
  • The update date does not change for upgrades made during the term.
Example: If you newly contract an annual plan on January 10
  • Initial charge: Pro-rated amount for the first month (21 days out of 31) + lump sum for the remaining 11 months
  • Next update date: January 1 of the following year (fixed every year on January 1)
Example: If you upgrade your annual plan on May 15
  • Charges: Difference for May 15 to 31 + difference for June to December (7 months)
  • Next update date: Remains January 1 of the following year

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Additional Notes

  • Downgrades and changes to the payment cycle are not reflected immediately and will apply from the next update date (no pro-rata calculation will be performed).