497

The interactive data file included as an exhibit to this filing relates to the supplement to the prospectus for Columbia Mid Cap Growth Opportunity Fund filed pursuant to Rule 497(e) under the Securities Act of 1933, as amended, on October 1, 2012 (Accession No. 0001193125-12-410494), which is incorporated herein by reference.

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Prospectus Supplement — Oct. 1, 2012

to the Prospectus of Columbia Mid Cap Growth Opportunity Fund, as supplemented

Effective October 31, 2012, information with respect to Class R3 shares (effective October 31, 2012, known as Class R4 shares) found in the Annual Fund Operating Expenses table and Example in the Fees and Expenses of the Fund section in the Summary of the Fund is hereby replaced with the following:

Annual Fund Operating Expenses(a) (expenses that you pay each year as a percentage of the value of your investment)
	Class R4
Management fees		0.74	%
Distribution and/or service (12b-1) fees		0.00	%
Other expenses		0.40	%
Total annual fund operating expenses		1.14	%
Less: Fee waiver/expense reimbursement(b)		0.09	%
Total annual fund operating expenses after fee waiver/expense reimbursement(b)		1.05	%

^(a)  Expense ratios have been adjusted to reflect current fees.

^(b)  Columbia Management Investment Advisers, LLC and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until October 31, 2013, unless sooner terminated at the sole discretion of the Fund’s Board of Trustees. Under this agreement, net operating expenses will not, subject to applicable exclusions, exceed the annual rate of 1.05% for Class R4.

Example

Class	1 year		3 years		5 years		10 years
Class R4	$	107	$	354	$	620	$	1,383

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

Columbia Funds Series Trust II

Prospectus Date

rr_ProspectusDate

Apr. 01, 2012

Supplement [Text Block]

csft26_SupplementTextBlock

Prospectus Supplement — Oct. 1, 2012

to the Prospectus of Columbia Mid Cap Growth Opportunity Fund, as supplemented

Effective October 31, 2012, information with respect to Class R3 shares (effective October 31, 2012, known as Class R4 shares) found in the Annual Fund Operating Expenses table and Example in the Fees and Expenses of the Fund section in the Summary of the Fund is hereby replaced with the following:

Annual Fund Operating Expenses(a) (expenses that you pay each year as a percentage of the value of your investment)
	Class R4
Management fees		0.74	%
Distribution and/or service (12b-1) fees		0.00	%
Other expenses		0.40	%
Total annual fund operating expenses		1.14	%
Less: Fee waiver/expense reimbursement(b)		0.09	%
Total annual fund operating expenses after fee waiver/expense reimbursement(b)		1.05	%

^(a)  Expense ratios have been adjusted to reflect current fees.

^(b)  Columbia Management Investment Advisers, LLC and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until October 31, 2013, unless sooner terminated at the sole discretion of the Fund’s Board of Trustees. Under this agreement, net operating expenses will not, subject to applicable exclusions, exceed the annual rate of 1.05% for Class R4.

Example

Class	1 year		3 years		5 years		10 years
Class R4	$	107	$	354	$	620	$	1,383

Columbia Mid Cap Growth Opportunity Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement [Text Block]

csft26_SupplementTextBlock

Prospectus Supplement — Oct. 1, 2012

to the Prospectus of Columbia Mid Cap Growth Opportunity Fund, as supplemented

Effective October 31, 2012, information with respect to Class R3 shares (effective October 31, 2012, known as Class R4 shares) found in the Annual Fund Operating Expenses table and Example in the Fees and Expenses of the Fund section in the Summary of the Fund is hereby replaced with the following:

Annual Fund Operating Expenses(a) (expenses that you pay each year as a percentage of the value of your investment)
	Class R4
Management fees		0.74	%
Distribution and/or service (12b-1) fees		0.00	%
Other expenses		0.40	%
Total annual fund operating expenses		1.14	%
Less: Fee waiver/expense reimbursement(b)		0.09	%
Total annual fund operating expenses after fee waiver/expense reimbursement(b)		1.05	%

^(a)  Expense ratios have been adjusted to reflect current fees.

^(b)  Columbia Management Investment Advisers, LLC and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until October 31, 2013, unless sooner terminated at the sole discretion of the Fund’s Board of Trustees. Under this agreement, net operating expenses will not, subject to applicable exclusions, exceed the annual rate of 1.05% for Class R4.

Example

Class	1 year		3 years		5 years		10 years
Class R4	$	107	$	354	$	620	$	1,383

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

October 31, 2013

Expenses Restated to Reflect Current [Text]

rr_ExpensesRestatedToReflectCurrent

Expense ratios have been adjusted to reflect current fees.

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Columbia Mid Cap Growth Opportunity Fund | Class R4

Risk/Return:

rr_RiskReturnAbstract

Management fees

rr_ManagementFeesOverAssets

0.74%

^[1]

Distribution and/or service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

^[1]

Other expenses

rr_OtherExpensesOverAssets

0.40%

^[1]

Total annual fund operating expenses

rr_ExpensesOverAssets

1.14%

^[1]

Less: Fee waiver/expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.09%

^[1],[2]

Total annual fund operating expenses after fee waiver/expense reimbursement

rr_NetExpensesOverAssets

1.05%

^[1],[2]

1 year

rr_ExpenseExampleYear01

107

3 years

rr_ExpenseExampleYear03

354

5 years

rr_ExpenseExampleYear05

620

10 years

rr_ExpenseExampleYear10

1,383

1 Year

rr_ExpenseExampleNoRedemptionYear01

107

3 Years

rr_ExpenseExampleNoRedemptionYear03

354

5 Years

rr_ExpenseExampleNoRedemptionYear05

620

10 Years

rr_ExpenseExampleNoRedemptionYear10

1,383

[1] Expense ratios have been adjusted to reflect current fees.

[2] Columbia Management Investment Advisers, LLC and certain of its affiliates have contractually agreed to waive fees and/or to reimburse expenses (excluding certain fees and expenses, such as transaction costs and certain other investment related expenses, interest, taxes, acquired fund fees and expenses, and extraordinary expenses) until October 31, 2013, unless sooner terminated at the sole discretion of the Fund's Board of Trustees. Under this agreement, net operating expenses will not, subject to applicable exclusions, exceed the annual rate of 1.05% for Class R4.

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Document and Entity Information	12 Months Ended
	Apr. 01, 2012
Risk/Return:
Document Type	Other
Document Period End Date	Nov. 30, 2011
Registrant Name	Columbia Funds Series Trust II
Central Index Key	0001352280
Amendment Flag	false
Document Creation Date	Oct. 01, 2012
Document Effective Date	Oct. 01, 2012
Prospectus Date	Apr. 01, 2012

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	Columbia Funds Series Trust II
Prospectus Date	rr_ProspectusDate	Apr. 01, 2012
Document Creation Date	dei_DocumentCreationDate	Oct. 01, 2012