v3.26.1
Fees and Expenses
Jul. 23, 2026
Mercer US Small/Mid Cap Equity Fund | Mercer US Small/Mid Cap Equity Fund  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] “Other Expenses” include administrative, custodial, legal, audit, transfer agent and Trustees’ fees and expenses. The “Other Expenses” shown for Adviser Class and Class Y-2 are based on estimated amounts for the Fund’s current fiscal year, as the Adviser Class and Class Y-2 shares of the Fund had not commenced operations prior to the most recent fiscal year end.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] Total Annual Fund Operating Expenses and Net Annual Fund Operating Expenses do not correlate to the “total expenses (before reductions and reimbursements/waivers) to average daily net assets” and “net expenses to average daily net assets”, respectively, provided in the Financial Highlights. The information in the Financial Highlights does not include Acquired Fund Fees and Expenses, which are included above.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
    Adviser
Class
  Class I   Class Y-2   Class Y-3
Management Fees(1)(2)     0.59 %     0.59 %     0.59 %     0.59 %
Distribution (12b-1) Fees     0.25 %     None       None       None  
Non-Distribution Shareholder Administrative Services Fees     0.25 %     0.25 %     0.15 %     None  
Other Expenses(3)     0.05 %     0.05 %     0.05 %     0.05 %
Acquired Fund Fees and Expenses     0.07 %     0.07 %     0.07 %     0.07 %
Total Annual Fund Operating Expenses(2)(4)     1.21 %     0.96 %     0.86 %     0.71 %
Less Fee Waivers(1)     (0.21 %)     (0.21 %)     (0.21 %)     (0.21 %)
Net Annual Fund Operating Expenses(3)     1.00 %     0.75 %     0.65 %     0.50 %

 

(1)Mercer Investments LLC (the “Adviser”) has contractually agreed, until at least July 31, 2026, to waive any portion of its management fee that exceeds the aggregate amount of the subadvisory fees that the Adviser is required to pay to the Fund’s subadvisers. This contractual fee waiver agreement may only be changed or eliminated with the approval of the Fund’s Board of Trustees. The fees waived by the Adviser pursuant to this agreement are not subject to reimbursement by the Fund to the Adviser. The amount of the fee waiver has been estimated to reflect the subadvisory fees in effect as of the date of this prospectus.

 

(2)The “Management Fees” and “Total Annual Fund Operating Expenses” have been adjusted to reflect the decrease in the management fee payable by the Portfolio from 0.87% to 0.59% effective as of July 1, 2026.

 

(3)“Other Expenses” include administrative, custodial, legal, audit, transfer agent and Trustees’ fees and expenses. The “Other Expenses” shown for Adviser Class and Class Y-2 are based on estimated amounts for the Fund’s current fiscal year, as the Adviser Class and Class Y-2 shares of the Fund had not commenced operations prior to the most recent fiscal year end.

 

(4)Total Annual Fund Operating Expenses and Net Annual Fund Operating Expenses do not correlate to the “total expenses (before reductions and reimbursements/waivers) to average daily net assets” and “net expenses to average daily net assets”, respectively, provided in the Financial Highlights. The information in the Financial Highlights does not include Acquired Fund Fees and Expenses, which are included above.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

The example below is intended to help you compare the costs of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods shown, that your investment has a 5% return each year, and that the Fund’s operating expenses remain the same as shown above (taking into account the contractual expense limitation being in effect for the one-year period ending July 31, 2026).

 

Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example, With Redemption [Table]
    1 Year     3 Years     5 Years     10 Years  
                         
Adviser Class   $ 102     $ 363     $ 645     $ 1,447  
Class I   $ 77     $ 285     $ 510     $ 1,159  
Class Y-2   $ 66     $ 253     $ 456     $ 1,041  
Class Y-3   $ 51     $ 206     $ 374     $ 863  
Mercer Non-US Core Equity Fund | Mercer Non-US Core Equity Fund  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] “Other Expenses” include administrative, custodial, legal, audit, transfer agent and Trustees’ fees and expenses. The “Other Expenses” shown for Adviser Class and Class Y-2 are based on estimated amounts for the Fund’s current fiscal year, as the Adviser Class and Class Y-2 shares of the Fund had not commenced operations prior to the most recent fiscal year end.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
    Adviser
Class
  Class I   Class Y-2   Class Y-3
Management Fees(1)(2)     0.54 %     0.54 %     0.54 %     0.54 %
Distribution (12b-1) Fees     0.25 %     None       None       None  
Non-Distribution Shareholder Administrative Services Fees     0.25 %     0.25 %     0.15 %     None  
Other Expenses(3)     0.05 %     0.05 %     0.05 %     0.05 %
Total Annual Fund Operating Expenses(2)     1.09 %     0.84 %     0.74 %     0.59 %
Less Fee Waivers(1)     (0.22 %)     (0.22 %)     (0.22 %)     (0.22 %)
Net Annual Fund Operating Expenses     0.87 %     0.62 %     0.52 %     0.37 %

 

(1)Mercer Investments LLC (the “Adviser”) has contractually agreed, until at least July 31, 2026, to waive any portion of its management fee that exceeds the aggregate amount of the subadvisory fees that the Adviser is required to pay to the Fund’s subadvisers. This contractual fee waiver agreement may only be changed or eliminated with the approval of the Fund’s Board of Trustees. The fees waived by the Adviser pursuant to this agreement are not subject to reimbursement by the Fund to the Adviser. The amount of the fee waiver has been estimated to reflect the subadvisory fees in effect as of the date of this prospectus.

 

(2)The “Management Fees” and “Total Annual Fund Operating Expenses” have been adjusted to reflect the decrease in the management fee payable by the Portfolio from 0.70% to 0.54% effective as of July 1, 2026.

 

(3)“Other Expenses” include administrative, custodial, legal, audit, transfer agent and Trustees’ fees and expenses. The “Other Expenses” shown for Adviser Class and Class Y-2 are based on estimated amounts for the Fund’s current fiscal year, as the Adviser Class and Class Y-2 shares of the Fund had not commenced operations prior to the most recent fiscal year end. The “Other Expenses” shown for Class I are also based on estimated amounts for the Fund’s current fiscal year.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

The example below is intended to help you compare the costs of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods shown, that your investment has a 5% return each year, and that the Fund’s operating expenses remain the same as shown above (taking into account the contractual expense limitation being in effect for the one-year period ending July 31, 2026).

 

Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example, With Redemption [Table]
    1 Year     3 Years     5 Years     10 Years  
                         
Adviser Class   $ 89     $ 325     $ 580     $ 1,309  
Class I   $ 63     $ 246     $ 444     $ 1,017  
Class Y-2   $ 53     $ 214     $ 390     $ 898  
Class Y-3   $ 38     $ 167     $ 307     $ 717  
Mercer Emerging Markets Equity Fund | Mercer Emerging Markets Equity Fund  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] “Other Expenses” include administrative, custodial, legal, audit, transfer agent and Trustees’ fees and expenses. The “Other Expenses” shown for Adviser Class and Class Y-2 are based on estimated amounts for the Fund’s current fiscal year, as the Adviser Class and Class Y-2 shares of the Fund had not commenced operations prior to the most recent fiscal year end.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] Total Annual Fund Operating Expenses and Net Annual Fund Operating Expenses do not correlate to the “total expenses (before reductions and reimbursements/waivers) to average daily net assets” and “net expenses to average daily net assets”, respectively, provided in the Financial Highlights. The information in the Financial Highlights does not include Acquired Fund Fees and Expenses, which are included above.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
    Adviser
Class
  Class I   Class Y-2   Class Y-3
Management Fees(1)(2)     0.56 %     0.56 %     0.56 %     0.56 %
Distribution (12b-1) Fees     0.25 %     None       None       None  
Non-Distribution Shareholder Administrative Services Fees     0.25 %     0.25 %     0.15 %     None  
Other Expenses(3)     0.10 %     0.10 %     0.10 %     0.10 %
Acquired Fund Fees and Expenses     0.01 %     0.01 %     0.01 %     0.01 %
Total Annual Fund Operating Expenses(2)(4)     1.17 %     0.92 %     0.82 %     0.67 %
Less Fee Waivers(1)     (0.29 %)     (0.29 %)     (0.29 %)     (0.29 %)
Net Annual Fund Operating Expenses(4)     0.88 %     0.63 %     0.53 %     0.38 %

 

(1)Mercer Investments LLC (the “Adviser”) has contractually agreed, until at least July 31, 2026, to waive any portion of its management fee that exceeds the aggregate amount of the subadvisory fees that the Adviser is required to pay to the Fund’s subadvisers. This contractual fee waiver agreement may only be changed or eliminated with the approval of the Fund’s Board of Trustees. The fees waived by the Adviser pursuant to this agreement are not subject to reimbursement by the Fund to the Adviser. The amount of the fee waiver has been estimated to reflect the subadvisory fees in effect as of the date of this prospectus.

 

(2)The “Management Fees” and “Total Annual Fund Operating Expenses” have been adjusted to reflect the decrease in the management fee payable by the Portfolio from 0.79% to 0.56% effective as of July 1, 2026.

 

(3)“Other Expenses” include administrative, custodial, legal, audit, transfer agent and Trustees’ fees and expenses. The “Other Expenses” shown for Adviser Class and Class Y-2 are based on estimated amounts for the Fund’s current fiscal year, as the Adviser Class and Class Y-2 shares of the Fund had not commenced operations prior to the most recent fiscal year end.

 

(4)Total Annual Fund Operating Expenses and Net Annual Fund Operating Expenses do not correlate to the “total expenses (before reductions and reimbursements/waivers) to average daily net assets” and “net expenses to average daily net assets”, respectively, provided in the Financial Highlights. The information in the Financial Highlights does not include Acquired Fund Fees and Expenses, which are included above.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

The example below is intended to help you compare the costs of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods shown, that your investment has a 5% return each year, and that the Fund’s operating expenses remain the same as shown above (taking into account the contractual expense limitation being in effect for the one-year period ending July 31, 2026).

 

Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example, With Redemption [Table]
    1 Year     3 Years     5 Years     10 Years  
                         
Adviser Class   $ 90     $ 343     $ 616     $ 1,395  
Class I   $ 64     $ 264     $ 481     $ 1.105  
Class Y-2   $ 54     $ 233     $ 427     $ 987  
Class Y-3   $ 39     $ 185     $ 344     $ 807  
Mercer Core Fixed Income Fund | Mercer Core Fixed Income Fund  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] “Other Expenses” include administrative, custodial, legal, audit, transfer agent and Trustees’ fees and expenses. The “Other Expenses” shown for Adviser Class and Class Y-2 are based on estimated amounts for the Fund’s current fiscal year, as the Adviser Class and Class Y-2 shares of the Fund had not commenced operations prior to the most recent fiscal year end.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
    Adviser
Class
  Class I   Class Y-2   Class Y-3
Management Fees(1)(2)     0.27 %     0.27 %     0.27 %     0.27 %
Distribution (12b-1) Fees     0.25 %     None       None       None  
Non-Distribution Shareholder Administrative Services Fees     0.25 %     0.25 %     0.15 %     None  
Other Expenses(3)     0.06 %     0.06 %     0.06 %     0.06 %
Total Annual Fund Operating Expenses(2)     0.83 %     0.58 %     0.48 %     0.33 %
Less Fee Waivers(1)     (0.19 %)     (0.19 %)     (0.19 %)     (0.19 %)
Net Annual Fund Operating Expenses     0.64 %     0.39 %     0.29 %     0.14 %

 

(1)Mercer Investments LLC (the “Adviser”) has contractually agreed, until at least July 31, 2026, to waive any portion of its management fee that exceeds the aggregate amount of the subadvisory fees that the Adviser is required to pay to the Fund’s subadvisers. This contractual fee waiver agreement may only be changed or eliminated with the approval of the Fund’s Board of Trustees. The fees waived by the Adviser pursuant to this agreement are not subject to reimbursement by the Fund to the Adviser. The amount of the fee waiver has been estimated to reflect the subadvisory fees in effect as of the date of this prospectus.

 

(2)The “Management Fees” and “Total Annual Fund Operating Expenses” have been adjusted to reflect the decrease in the management fee payable by the Portfolio from 0.32% to 0.27% effective as of July 1, 2026.

 

(3)“Other Expenses” include administrative, custodial, legal, audit, transfer agent and Trustees’ fees and expenses. The “Other Expenses” shown for Adviser Class and Class Y-2 are based on estimated amounts for the Fund’s current fiscal year, as the Adviser Class and Class Y-2 shares of the Fund had not commenced operations prior to the most recent fiscal year end.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

The example below is intended to help you compare the costs of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods shown, that your investment has a 5% return each year, and that the Fund’s operating expenses remain the same as shown above (taking into account the contractual expense limitation being in effect for the one-year period ending July 31, 2026).

 

Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example, With Redemption [Table]
    1 Year     3 Years     5 Years     10 Years  
Adviser Class   $ 65     $ 246     $ 442     $ 1,008  
Class I   $ 40     $ 167     $ 305     $ 708  
Class Y-2   $ 30     $ 135     $ 250     $ 585  
Class Y-3   $ 14     $ 87     $ 166     $ 400  
Mercer Opportunistic Fixed Income Fund | Mercer Opportunistic Fixed Income Fund  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] “Other Expenses” include administrative, custodial, legal, audit, transfer agent and Trustees’ fees and expenses. The “Other Expenses” shown for Adviser Class and Class Y-2 are based on estimated amounts for the Fund’s current fiscal year, as the Adviser Class and Class Y-2 shares of the Fund had not commenced operations prior to the most recent fiscal year end.
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] Total Annual Fund Operating Expenses and Net Annual Fund Operating Expenses do not correlate to the “total expenses (before reductions and reimbursements/waivers) to average daily net assets” and “net expenses to average daily net assets”, respectively, provided in the Financial Highlights. The information in the Financial Highlights does not include AFFE, which are included above.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
    Adviser
Class
  Class I   Class Y-2   Class Y-3
Management Fees(1)(2)     0.53 %     0.53 %     0.53 %     0.53 %
Distribution (12b-1) Fees     0.25 %     None       None       None  
Non-Distribution Shareholder Administrative Services Fees     0.25 %     0.25 %     0.15 %     None  
Other Expenses(3)     0.07 %     0.07 %     0.07 %     0.07 %
Acquired Fund Fees and Expenses(4)     0.09 %     0.09 %     0.09 %     0.09 %
Total Annual Fund Operating Expenses(2)(5)     1.19 %     0.94 %     0.84 %     0.69 %
Less Fee Waivers(1)     (0.18 %)     (0.18 %)     (0.18 %)     (0.18 %)
Net Annual Fund Operating Expenses(5)     1.01 %     0.76 %     0.66 %     0.51 %
 
(1)Mercer Investments LLC (the “Adviser”) has contractually agreed, until at least July 31, 2026, to waive any portion of its management fee that exceeds the aggregate amount of the subadvisory fees that the Adviser is required to pay to the Fund’s subadvisers. This contractual fee waiver agreement may only be changed or eliminated with the approval of the Fund’s Board of Trustees. The fees waived by the Adviser pursuant to this agreement are not subject to reimbursement by the Fund to the Adviser. The amount of the fee waiver has been estimated to reflect the subadvisory fees in effect as of the date of this prospectus.

 

(2)The “Management Fees” and “Total Annual Fund Operating Expenses” have been adjusted to reflect the decrease in the management fee payable by the Portfolio from 0.76% to 0.53% effective as of July 1, 2026.

 

(3)“Other Expenses” include administrative, custodial, legal, audit, transfer agent and Trustees’ fees and expenses. The “Other Expenses” shown for Adviser Class and Class Y-2 are based on estimated amounts for the Fund’s current fiscal year, as the Adviser Class and Class Y-2 shares of the Fund had not commenced operations prior to the most recent fiscal year end.

 

(4)Acquired Fund Fees and Expenses (“AFFE”) are indirect fees and expenses that the Fund incurs from investing in the shares of other funds, including business development companies. AFFE are based on estimated amounts for the current fiscal year.

 

(5)Total Annual Fund Operating Expenses and Net Annual Fund Operating Expenses do not correlate to the “total expenses (before reductions and reimbursements/waivers) to average daily net assets” and “net expenses to average daily net assets”, respectively, provided in the Financial Highlights. The information in the Financial Highlights does not include AFFE, which are included above.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

The example below is intended to help you compare the costs of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods shown, that your investment has a 5% return each year, and that the Fund’s operating expenses remain the same as shown above (taking into account the contractual expense limitation being in effect for the one-year period ending July 31, 2026).

 

Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example, With Redemption [Table]
    1 Year     3 Years     5 Years     10 Years  
Adviser Class   $ 103     $ 360     $ 637     $ 1,427  
Class I   $ 78     $ 282     $ 503     $ 1,138  
Class Y-2   $ 67     $ 250     $ 448     $ 1,020  
Class Y-3   $ 52     $ 203     $ 366     $ 842  
Mercer Short Duration Fixed Income Fund | Mercer Short Duration Fixed Income Fund  
Prospectus [Line Items]  
Other Expenses, New Fund, Based on Estimates [Text] “Other Expenses” include administrative, custodial, legal, audit, transfer agent and Trustees’ fees and expenses. The “Other Expenses” shown for Adviser Class, Class I and Class Y-2 are based on estimated amounts for the Fund’s current fiscal year, as the Adviser Class, Class I and Class Y-2 shares of the Fund had not commenced operations prior to the most recent fiscal year end.
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses [Table]
   Adviser Class   Class I   Class Y-2   Class Y-3 
Management Fees(1)(2)    0.29%   0.29%   0.29%   0.29%
Distribution (12b-1) Fees    0.25%   None    None    None 
Non-Distribution Shareholder Administrative Services Fees    0.25%   0.25%   0.15%   None 
Other Expenses(3)    0.58%   0.58%   0.58%   0.58%
Total Annual Fund Operating Expenses(2)    1.37%   1.12%   1.02%   0.87%
Less Fee Waivers(1)(4)    (0.67%)   (0.67%)   (0.67%)   (0.67%)
Net Annual Fund Operating Expenses    0.70%   0.45%   0.35%   0.20%

 

(1)Mercer Investments LLC (the “Adviser”) has contractually agreed, until at least July 31, 2026, to waive any portion of its management fee that exceeds the aggregate amount of the subadvisory fees that the Adviser is required to pay to the Fund’s subadvisers. This contractual fee waiver agreement may only be changed or eliminated with the approval of the Fund’s Board of Trustees. The fees waived by the Adviser pursuant to this agreement are not subject to reimbursement by the Fund to the Adviser. The amount of the fee waiver has been estimated to reflect the subadvisory fees in effect as of the date of this prospectus.

 

(2)The “Management Fees” and “Total Annual Fund Operating Expenses” have been adjusted to reflect the decrease in the management fee payable by the Portfolio from 0.30% to 0.29% effective as of July 1, 2026.

 

(3)“Other Expenses” include administrative, custodial, legal, audit, transfer agent and Trustees’ fees and expenses. The “Other Expenses” shown for Adviser Class, Class I and Class Y-2 are based on estimated amounts for the Fund’s current fiscal year, as the Adviser Class, Class I and Class Y-2 shares of the Fund had not commenced operations prior to the most recent fiscal year end.

 

(4)The Adviser has also contractually agreed, until at least July 31, 2026, to waive fees and/or reimburse Fund expenses to the extent that annual fund operating expenses, net of the management fee waiver described in footnote (1) above, exceed 0.70% for Adviser Class shares, 0.45% for Class I shares, 0.35% for Class Y-2 shares and 0.20% for Class Y-3 shares, excluding, as applicable, acquired fund fees and expenses, interest, taxes, 12b-1 fees, non-12b-1 shareholder administrative services fees, brokerage expenses, dividend and interest expenses on securities sold short, extraordinary expenses and other expenses not incurred in the ordinary course of the Fund’s business. This contractual fee waiver and reimbursement agreement cannot be eliminated prior to July 31, 2026 without the approval of the Fund’s Board of Trustees. The fees waived by the Adviser pursuant to this agreement are not subject to reimbursement by the Fund to the Adviser.
Expense Example [Heading] Example
Expense Example Narrative [Text Block]

The example below is intended to help you compare the costs of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods shown, that your investment has a 5% return each year, and that the Fund’s operating expenses remain the same as shown above (taking into account the contractual expense limitation being in effect for the one-year period ending July 31, 2026).

 

Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

Expense Example, With Redemption [Table]
    1 Year     3 Years     5 Years     10 Years  
Adviser Class   $ 72     $ 368     $ 686     $ 1,588  
Class I   $ 46     $ 289     $ 552     $ 1,303  
Class Y-2   $ 36     $ 258     $ 498     $ 1,187  
Class Y-3   $ 20     $ 210     $ 416     $ 1,011