0000702149 2026-08-29 2026-08-29 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member 2026-08-29 2026-08-29 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:C000020486Member 2026-08-29 2026-08-29 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:InterestRateChangesMember 2026-08-29 2026-08-29 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:IncomeRiskMember 2026-08-29 2026-08-29 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:IssuerSpecificChangesMember 2026-08-29 2026-08-29 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:USGovernmentObligationsRiskMember 2026-08-29 2026-08-29 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member oef:RiskLoseMoneyMember 2026-08-29 2026-08-29 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member oef:RiskMoneyMarketFundMayNotPreserveDollarMember 2026-08-29 2026-08-29 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member oef:RiskNotInsuredDepositoryInstitutionMember 2026-08-29 2026-08-29 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member oef:RiskMoneyMarketFundSponsorMayNotProvideSupportMember 2026-08-29 2026-08-29 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:C000020486Member 2016-01-01 2016-12-31 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:C000020486Member 2017-01-01 2017-12-31 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:C000020486Member 2018-01-01 2018-12-31 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:C000020486Member 2019-01-01 2019-12-31 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:C000020486Member 2020-01-01 2020-12-31 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:C000020486Member 2021-01-01 2021-12-31 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:C000020486Member 2022-01-01 2022-12-31 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:C000020486Member 2023-01-01 2023-12-31 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:C000020486Member 2024-01-01 2024-12-31 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:C000020486Member 2025-01-01 2025-12-31 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:C000020486Member 2025-08-29 2026-08-29 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:C000020486Member 2021-08-29 2026-08-29 0000702149 fmr:NCCMTGovernmentPortfolio-PROStandAloneMember fmr:S000007506Member fmr:C000020486Member 2016-08-29 2026-08-29 iso4217:USD pure 485BPOS 2026-08-29 false 0000702149 N-1A The North Carolina Capital Management Trust Fund Summary Fund: Government Portfolio Investment Objective Government Portfolio seeks to obtain as high a level of current income as is consistent with the preservation of capital and liquidity and to maintain a constant net asset value of $1.00 per share. Fee Table The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as fees to financial intermediaries, which are not reflected in the tables and examples below. Shareholder fees 0 Annual Operating Expenses 0.00138 0.00065 0.00002 0.00205 -0.00065 0.00140 2029-10-31 This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated: 14 45 92 238 Principal Investment Strategies Normally investing at least 99.5% of total assets in cash, U.S. Government securities and/or repurchase agreements that are collateralized fully (i.e., collateralized by cash or government securities), as permitted by North Carolina General Statute 159-30, as amended (the Statute) and 20 North Carolina Administrative Code 3.0712, as amended (the Code). Investing in U.S. Government securities issued by entities that are chartered or sponsored by Congress but whose securities are neither issued nor guaranteed by the U.S. Treasury. Investing in compliance with industry-standard regulatory requirements for money market funds for the quality, maturity, liquidity, and diversification of investments. Investing only in securities that are authorized for investment by units of local governments pursuant to North Carolina General Statute 159-30(c)(8) and 20 North Carolina Administrative Code 3.0712, as amended. In addition, the fund normally invests at least 80% of its assets in U.S. Government securities and repurchase agreements for those securities. U.S. Government securities are high-quality securities issued or guaranteed by the U.S. Treasury or by an agency or instrumentality of the U.S. Government. U.S. Government securities may be backed by the full faith and credit of the U.S. Treasury, the right to borrow from the U.S. Treasury, or the agency or instrumentality issuing or guaranteeing the security. Certain issuers of U.S. Government securities, including Fannie Mae, Freddie Mac, and the Federal Home Loan Banks, are sponsored or chartered by Congress but their securities are neither issued nor guaranteed by the U.S. Treasury. The issuer usually pays a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the security. A repurchase agreement is an agreement to buy a security at one price and a simultaneous agreement to sell it back at an agreed-upon price. A repurchase agreement entered into by the fund may be collateralized by U.S. Government securities or cash. Interest Rate Changes. Interest rate increases can cause the price of a money market security to decrease. Income Risk. A low or negative interest rate environment can adversely affect the fund's yield. Issuer-Specific Changes. A decline in the credit quality of an issuer or a provider of credit support (such as guarantees) or a maturity-shortening structure (such as demand and put features) for a security can cause the price of a money market security to decrease. U.S. Government Obligations Risk. Certain securities in which the fund may invest, including securities issued by certain U.S. Government agencies and U.S. Government sponsored enterprises, are not guaranteed by the U.S. Government or supported by the full faith and credit of the United States. You could lose money by investing in the fund . Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so . An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency .   Fidelity   Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress. Performance The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year.   Past performance is not an indication of future performance. The information illustrates the changes in the performance of the fund's shares from year to year. Past performance is not an indication of future performance. Year-by-Year Returns 0.0032 0.0074 0.0172 0.0208 0.0039 0.0001 0.0155 0.0505 0.0519 0.0422    Highest Quarter Return 0.0133 2023-12-31    Lowest Quarter Return 0.0000 2021-03-31    Year-to-Date Return 0.0178 2026-06-30 Average Annual Returns Government Portfolio 0.0422 0.0318 0.0211 A Fidelity Management & Research Company LLC (FMR) has contractually agreed to reimburse the fund to the extent that total operating expenses (excluding interest, certain taxes, fees and expenses of the Independent Trustees, extraordinary expenses, and acquired fund fees and expenses (including fees and expenses associated with a wholly owned subsidiary), if any, as well as non-operating expenses such as brokerage commissions and fees and expenses associated with the fund's securities lending program, if applicable), as a percentage of its average net assets, exceed 0.14% (the Expense Cap). If at any time during the current fiscal year expenses for the fund fall below the Expense Cap, FMR reserves the right to recoup through the end of the fiscal year any expenses that were reimbursed during the current fiscal year up to, but not in excess of, the Expense Cap. This arrangement will remain in effect through October 31, 2029 . FMR may not terminate this arrangement before the expiration date without the approval of the Board of Trustees and may extend it in its discretion after that date.