# EDGAR Filing Document

**Accession Number:** 0000858372
**File Stem:** 0000088053-25-000813
**Filing Date:** 2025-9
**Character Count:** 3200
**Document Hash:** 87333d98780c4b55a4a1ae73df4883d9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000088053-25-000813.hdr.sgml**: 20250922

**ACCESSION NUMBER**: 0000088053-25-000813

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250922

**DATE AS OF CHANGE**: 20250922

**EFFECTIVENESS DATE**: 20250922

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CASH ACCOUNT TRUST
- **CENTRAL INDEX KEY:** 0000858372

**ORGANIZATION NAME:**
- **EIN:** 371259201
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0430

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-32476
- **FILM NUMBER:** 251329721

**BUSINESS ADDRESS:**
- **STREET 1:** 875 THIRD AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10022-6225
- **BUSINESS PHONE:** 212-454-4500

**MAIL ADDRESS:**
- **STREET 1:** 875 THIRD AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10022-6225

## Series and Classes Contracts Data

### DWS Tax-Exempt Portfolio (Series ID: S000006303)

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|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| Service Shares | CHSXX         | C000017349 |

---

## Series and Classes Contracts Data

### DWS Tax-Exempt Portfolio (Series ID: S000006303)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000017349 | Service Shares | CHSXX           |

**SUPPLEMENT TO THE CURRENTLY EFFECTIVE SUMMARY PROSPECTUS, STATUTORY PROSPECTUS AND** <br>**STATEMENT OF ADDITIONAL INFORMATION**

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**Cash Account Trust – Tax-Exempt Portfolio**

Service Shares

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Upon the recommendation of DWS Investment Management Americas, Inc. (the "Advisor"), the investment advisor for DWS Tax-Exempt Portfolio (the "Fund"), the Board of Trustees of Cash Account Trust has authorized, on behalf of the Fund, the termination and liquidation of Service Shares, a share class of the Fund (the "Class"), which will be effective on or about November 25, 2025 (the "Liquidation Date"). Accordingly, the Fund will redeem all outstanding Class shares on the Liquidation Date. The costs of the liquidation, including the notification to shareholders, will be borne by the Fund but reimbursed by the Advisor, after taking into account applicable voluntary or contractual expense caps then in effect by the Advisor to waive or reimburse certain operating expenses of the Fund. Shareholders who elect to redeem their Class shares prior to the Liquidation Date will receive the net asset value per share (normally, $1.00) on such redemption date for all Class shares they redeem. Shareholders whose Class shares are redeemed automatically on the Liquidation Date will receive the net asset value per share (normally, $1.00) for all Class shares they own on the Liquidation Date.

The Class will be closed to new investors effective immediately. Retirement plans that currently offer the Class as an investment option may continue to offer the Class to their participants until the Liquidation Date and the Class will continue to accept subsequent investments and dividend reinvestments for existing accounts until the Liquidation Date.

*Please Retain This Supplement for Future Reference*

September 22, 2025

PRO_SAISTKR25-32

![](logo.jpg)

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