# EDGAR Filing Document

**Accession Number:** 0000751656
**File Stem:** 0001683863-25-005126
**Filing Date:** 2025-6
**Character Count:** 13397
**Document Hash:** 21431bb65f182f6b7a73dbe49da452a9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001683863-25-005126.hdr.sgml**: 20250611

**ACCESSION NUMBER**: 0001683863-25-005126

**CONFORMED SUBMISSION TYPE**: 24F-2NT

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250331

**FILED AS OF DATE**: 20250611

**DATE AS OF CHANGE**: 20250611

**EFFECTIVENESS DATE**: 20250611

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS MUNICIPAL SERIES TRUST
- **CENTRAL INDEX KEY:** 0000751656

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** 24F-2NT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-92915
- **FILM NUMBER:** 251039655

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 18006372929

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS MANAGED MULTI STATE MUNICIPAL BOND TRUST
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS MANAGED MULTI STATE TAX EXEMPT TRUST
- **DATE OF NAME CHANGE:** 19890410

## Series and Classes Contracts Data

### MFS Alabama Municipal Bond Fund (Series ID: S000002521)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| A          | MFALX         | C000006957 |
| B          | MBABX         | C000006958 |
| I          | MLALX         | C000169758 |
| R6         | MPOLX         | C000194226 |

---

### MFS New York Municipal Bond Fund (Series ID: S000002522)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| A          | MSNYX         | C000006959 |
| B          | MBNYX         | C000006960 |
| C          | MCNYX         | C000006961 |
| I          | MNYLX         | C000169759 |
| R6         | MPNYX         | C000194228 |

---

### MFS North Carolina Municipal Bond Fund (Series ID: S000002523)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| A          | MSNCX         | C000006962 |
| B          | MBNCX         | C000006963 |
| C          | MCNCX         | C000006964 |
| I          | MNCLX         | C000169760 |
| R6         | MPNCX         | C000194230 |

---

### MFS Pennsylvania Municipal Bond Fund (Series ID: S000002524)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| A          | MFPAX         | C000006965 |
| B          | MBPAX         | C000006966 |
| I          | MPALX         | C000169761 |
| R6         | MPPAX         | C000194232 |

---

### MFS South Carolina Municipal Bond Fund (Series ID: S000002525)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| A          | MFSCX         | C000006967 |
| B          | MBSCX         | C000006968 |
| I          | MTSCX         | C000169762 |
| R6         | MPOCX         | C000194234 |

---

### MFS Virginia Municipal Bond Fund (Series ID: S000002527)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| A          | MSVAX         | C000006971 |
| B          | MBVAX         | C000006972 |
| C          | MVACX         | C000006973 |
| I          | MIVAX         | C000169764 |
| R6         | MPVOX         | C000194238 |

---

### MFS West Virginia Municipal Bond Fund (Series ID: S000002528)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| A          | MFWVX         | C000006974 |
| B          | MBWVX         | C000006975 |
| I          | MWVIX         | C000169765 |
| R6         | MPWVX         | C000194240 |

---

### MFS Arkansas Municipal Bond Fund (Series ID: S000002529)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| A          | MFARX         | C000006976 |
| B          | MBARX         | C000006977 |
| I          | MARLX         | C000169766 |
| R6         | MPRAX         | C000194242 |

---

### MFS California Municipal Bond Fund (Series ID: S000002530)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| A          | MCFTX         | C000006978 |
| B          | MBCAX         | C000006979 |
| C          | MCCAX         | C000006980 |
| I          | MCAVX         | C000169767 |
| R6         | MPOAX         | C000194244 |

---

### MFS Georgia Municipal Bond Fund (Series ID: S000002532)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| A          | MMGAX         | C000006983 |
| B          | MBGAX         | C000006984 |
| I          | MGATX         | C000169768 |
| R6         | MPGOX         | C000194246 |

---

### MFS Maryland Municipal Bond Fund (Series ID: S000002533)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| A          | MFSMX         | C000006985 |
| B          | MBMDX         | C000006986 |
| I          | MMDIX         | C000169769 |
| R6         | MPMDX         | C000194249 |

---

### MFS Massachusetts Municipal Bond Fund (Series ID: S000002534)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| A          | MFSSX         | C000006987 |
| B          | MBMAX         | C000006988 |
| I          | MTALX         | C000169770 |
| R6         | MPMAX         | C000194250 |

---

### MFS Mississippi Municipal Bond Fund (Series ID: S000002535)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| A          | MISSX         | C000006989 |
| B          | MBMSX         | C000006990 |
| I          | MMSTX         | C000169771 |
| R6         | MPMSX         | C000194252 |

---

### MFS Municipal Income Fund (Series ID: S000002536)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| A          | MFIAX         | C000006991 |
| B          | MMIBX         | C000006992 |
| C          | MMICX         | C000006993 |
| A1         | MMIDX         | C000042676 |
| B1         | MMIGX         | C000042677 |
| I          | MIMIX         | C000105400 |
| R6         | MPMNX         | C000194254 |

---

### MFS Municipal Intermediate Fund (Series ID: S000071695)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class C    | MIUCX         | C000227169 |
| Class A    | MIUAX         | C000227170 |
| Class I    | MIUIX         | C000227171 |
| Class R6   | MIURX         | C000227172 |

---

## Series and Classes Contracts Data

### MFS Alabama Municipal Bond Fund (Series ID: S000002521)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006957 | A            | MFALX           |
| C000006958 | B            | MBABX           |
| C000169758 | I            | MLALX           |
| C000194226 | R6           | MPOLX           |

### MFS New York Municipal Bond Fund (Series ID: S000002522)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006959 | A            | MSNYX           |
| C000006960 | B            | MBNYX           |
| C000006961 | C            | MCNYX           |
| C000169759 | I            | MNYLX           |
| C000194228 | R6           | MPNYX           |

### MFS North Carolina Municipal Bond Fund (Series ID: S000002523)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006962 | A            | MSNCX           |
| C000006963 | B            | MBNCX           |
| C000006964 | C            | MCNCX           |
| C000169760 | I            | MNCLX           |
| C000194230 | R6           | MPNCX           |

### MFS Pennsylvania Municipal Bond Fund (Series ID: S000002524)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006965 | A            | MFPAX           |
| C000006966 | B            | MBPAX           |
| C000169761 | I            | MPALX           |
| C000194232 | R6           | MPPAX           |

### MFS South Carolina Municipal Bond Fund (Series ID: S000002525)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006967 | A            | MFSCX           |
| C000006968 | B            | MBSCX           |
| C000169762 | I            | MTSCX           |
| C000194234 | R6           | MPOCX           |

### MFS Virginia Municipal Bond Fund (Series ID: S000002527)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006971 | A            | MSVAX           |
| C000006972 | B            | MBVAX           |
| C000006973 | C            | MVACX           |
| C000169764 | I            | MIVAX           |
| C000194238 | R6           | MPVOX           |

### MFS West Virginia Municipal Bond Fund (Series ID: S000002528)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006974 | A            | MFWVX           |
| C000006975 | B            | MBWVX           |
| C000169765 | I            | MWVIX           |
| C000194240 | R6           | MPWVX           |

### MFS Arkansas Municipal Bond Fund (Series ID: S000002529)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006976 | A            | MFARX           |
| C000006977 | B            | MBARX           |
| C000169766 | I            | MARLX           |
| C000194242 | R6           | MPRAX           |

### MFS California Municipal Bond Fund (Series ID: S000002530)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006978 | A            | MCFTX           |
| C000006979 | B            | MBCAX           |
| C000006980 | C            | MCCAX           |
| C000169767 | I            | MCAVX           |
| C000194244 | R6           | MPOAX           |

### MFS Georgia Municipal Bond Fund (Series ID: S000002532)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006983 | A            | MMGAX           |
| C000006984 | B            | MBGAX           |
| C000169768 | I            | MGATX           |
| C000194246 | R6           | MPGOX           |

### MFS Maryland Municipal Bond Fund (Series ID: S000002533)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006985 | A            | MFSMX           |
| C000006986 | B            | MBMDX           |
| C000169769 | I            | MMDIX           |
| C000194249 | R6           | MPMDX           |

### MFS Massachusetts Municipal Bond Fund (Series ID: S000002534)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006987 | A            | MFSSX           |
| C000006988 | B            | MBMAX           |
| C000169770 | I            | MTALX           |
| C000194250 | R6           | MPMAX           |

### MFS Mississippi Municipal Bond Fund (Series ID: S000002535)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006989 | A            | MISSX           |
| C000006990 | B            | MBMSX           |
| C000169771 | I            | MMSTX           |
| C000194252 | R6           | MPMSX           |

### MFS Municipal Income Fund (Series ID: S000002536)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006991 | A            | MFIAX           |
| C000006992 | B            | MMIBX           |
| C000006993 | C            | MMICX           |
| C000042676 | A1           | MMIDX           |
| C000042677 | B1           | MMIGX           |
| C000105400 | I            | MIMIX           |
| C000194254 | R6           | MPMNX           |

### MFS Municipal Intermediate Fund (Series ID: S000071695)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000227169 | Class C      | MIUCX           |
| C000227170 | Class A      | MIUAX           |
| C000227171 | Class I      | MIUIX           |
| C000227172 | Class R6     | MIURX           |

## FORM 24F-2NT: Annual Notice of Securities Sold Pursuant to Rule 24f-2

### 24F-2NT: Filer Information

**Filer CIK:** 751656

**Is this a LIVE or TEST Filing?:** LIVE

**Filer Investment Company Type:** N-1A

### 24F-2NT: Annual Filing Information

**1. Name and address of issuer:**

- **Name of Issuer:** MFS Municipal Series Trust

- **Address:** 111 Huntington Avenue, Boston, MA 02199

**2. The Name and EDGAR Identifier of each series or class of securities for which this Form is filed:**

- [ ] Check box if the Form is being filed for all series and classes of the issuer.

**3. Investment Company Act File Number:** 811-4096

   **Securities Act File Number:** 002-92915

**4(a). Last day of fiscal year for which this Form is filed:** 03/31/2025

**4(b). Check box if this Form is being filed late:** [ ]

**4(c). Check box if this is the last time the issuer will be filing this Form:** [ ]

**5. Calculation of registration fee:**

- **(i) Aggregate sale price of securities sold during the fiscal year:** $3152536628.00

- **(ii) Aggregate price of securities redeemed or repurchased during the fiscal year:** $2047920836.00

- **(iii) Aggregate price of securities redeemed or repurchased during any prior fiscal year:** $806277486.00

- **(iv) Total available redemption credits [add Items 5(ii) and 5(iii)]:** $2854198322.00

- **(v) Net sales:** $298338306.00

- **(vi) Redemption credits available for use in future years:** $0.00

- **(vii) Multiplier for determining registration fee:** 0.0001531

- **(viii) Registration fee due:** $45675.59

**Signatures**

**Name and Title:** David L. DiLorenzo President

**Date:** 06/11/2025

**Signature:** David L. DiLorenzo