# EDGAR Filing Document

**Accession Number:** 0000746458
**File Stem:** 0001752724-25-199064
**Filing Date:** 2025-8
**Character Count:** 4847
**Document Hash:** 27d6311522d5b0d26aa9ea75c391267f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-25-199064.hdr.sgml**: 20250822

**ACCESSION NUMBER**: 0001752724-25-199064

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

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250531

**FILED AS OF DATE**: 20250822

**DATE AS OF CHANGE**: 20250822

**EFFECTIVENESS DATE**: 20250822

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AMERICAN CENTURY MUNICIPAL TRUST
- **CENTRAL INDEX KEY:** 0000746458

**ORGANIZATION NAME:**
- **EIN:** 776009794
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0531

**FILING VALUES:**
- **FORM TYPE:** 24F-2NT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-91229
- **FILM NUMBER:** 251244031

**BUSINESS ADDRESS:**
- **STREET 1:** 4500 MAIN STREET
- **CITY:** KANSAS CITY
- **STATE:** MO
- **ZIP:** 64111
- **BUSINESS PHONE:** 816-531-5575

**MAIL ADDRESS:**
- **STREET 1:** 4500 MAIN STREET
- **CITY:** KANSAS CITY
- **STATE:** MO
- **ZIP:** 64111

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BENHAM MUNICIPAL TRUST
- **DATE OF NAME CHANGE:** 19940202

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BENHAM NATIONAL TAX FREE TRUST
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### HIGH-YIELD MUNICIPAL FUND (Series ID: S000006471)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| INVESTOR CLASS | ABHYX         | C000017685 |
| A CLASS        | AYMAX         | C000017686 |
| C CLASS        | AYMCX         | C000017688 |
| I CLASS        | AYMIX         | C000088012 |
| Y CLASS        | AYMYX         | C000189766 |

---

### INTERMEDIATE-TERM TAX-FREE BOND FUND (Series ID: S000006472)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| INVESTOR CLASS | TWTIX         | C000017689 |
| I CLASS        | AXBIX         | C000017691 |
| A CLASS        | TWWOX         | C000088013 |
| C CLASS        | TWTCX         | C000088014 |
| Y CLASS        | ATBYX         | C000189767 |

---

### TAX-FREE MONEY MARKET FUND (Series ID: S000006473)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| INVESTOR CLASS | BNTXX         | C000017692 |

---

## Series and Classes Contracts Data

### HIGH-YIELD MUNICIPAL FUND (Series ID: S000006471)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000017685 | INVESTOR CLASS | ABHYX           |
| C000017686 | A CLASS        | AYMAX           |
| C000017688 | C CLASS        | AYMCX           |
| C000088012 | I CLASS        | AYMIX           |
| C000189766 | Y CLASS        | AYMYX           |

### INTERMEDIATE-TERM TAX-FREE BOND FUND (Series ID: S000006472)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000017689 | INVESTOR CLASS | TWTIX           |
| C000017691 | I CLASS        | AXBIX           |
| C000088013 | A CLASS        | TWWOX           |
| C000088014 | C CLASS        | TWTCX           |
| C000189767 | Y CLASS        | ATBYX           |

### TAX-FREE MONEY MARKET FUND (Series ID: S000006473)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000017692 | INVESTOR CLASS | BNTXX           |

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

### 24F-2NT: Filer Information

**Filer CIK:** 0000746458

**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:** American Century Municipal Trust

- **Address:** 4500 Main Street, Kansas City, MO 64111

**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:** 811-4025

   **Securities Act File Number:** 002-91229

**4(a). Last day of fiscal year for which this Form is filed:** 05/31/2025

**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:** $1507742890.00

- **(ii) Aggregate price of securities redeemed or repurchased during the fiscal year:** $1545876479.00

- **(iii) Aggregate price of securities redeemed or repurchased during any prior fiscal year:** $247358147.00

- **(iv) Total available redemption credits [add Items 5(ii) and 5(iii)]:** $1793234626.00

- **(v) Net sales:** $0.00

- **(vi) Redemption credits available for use in future years:** $-285491736.00

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

- **(viii) Registration fee due:** $0.00

**Signatures**

**Name and Title:** Assistant Treasurer

**Date:** 08/13/2025

**Signature:** Amy R. Bitter