INTERNAL CONTROL RPT

Report of Independent Registered Public Accounting Firm

To the Board of Trustees of Parnassus Income Funds and Shareholders of Parnassus Core Equity Fund and Parnassus Fixed Income Fund

In planning and performing our audits of the financial statements of Parnassus Core Equity Fund and Parnassus Fixed Income Fund (constituting the Parnassus Income Funds) (hereafter collectively referred to as the "Funds") as of and for the year ended December 31, 2022, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), we considered the Funds' internal control over financial reporting, including controls over safeguarding securities, as a basis for designing our auditing procedures for the purpose of expressing our opinion on the financial statements and to comply with the requirements of Form N-CEN, but not for the purpose of expressing an opinion on the effectiveness of the Funds' internal control over financial reporting. Accordingly, we do not express an opinion on the effectiveness of the Funds' internal control over financial reporting.

The management of the Funds is responsible for establishing and maintaining effective internal control over financial reporting. In fulfilling this responsibility, estimates and judgments by management are required to assess the expected benefits and related costs of controls. A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of a company's assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

A deficiency in internal control over financial reporting exists when the design or operation of a control does not allow management or employees, in the normal course of performing their assigned functions, to prevent or detect misstatements on a timely basis. A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the company's annual or interim financial statements will not be prevented or detected on a timely basis.

Our consideration of the Funds' internal control over financial reporting was for the limited purpose described in the first paragraph and would not necessarily disclose all deficiencies in internal control over financial reporting that might be material weaknesses under standards established by the PCAOB. However, we noted no deficiencies in the Funds' internal control over financial reporting and its operation, including controls over safeguarding securities, that we consider to be a material weakness as defined above as of December 31, 2022.

This report is intended solely for the information and use of the Board of Trustees of Parnassus Income Funds and the Securities and Exchange Commission and is not intended to be and should not be used by anyone other than these specified parties.

/s/PricewaterhouseCoopers LLP San Francisco, California January 27, 2023

PricewaterhouseCoopers LLP, 405 Howard Street, Suite 600, San Francisco, CA 94105

T: (415) 498 5000, www .pwc.com/us

INTERNAL CONTROL RPT

Report of Independent Registered Public Accounting Firm

To the Board of Trustees of Parnassus Funds and Parnassus Income Funds, and Shareholders of Parnassus Mid Cap Fund, Parnassus Value Equity Fund, Parnassus Mid Cap Growth Fund, Parnassus Growth Equity Fund, Parnassus Core Equity Fund and Parnassus Fixed Income Fund

Opinions on the Financial Statements

We have audited the accompanying statements of assets and liabilities, including the portfolio of investments, of Parnassus Mid Cap Growth Fund, Parnassus Mid Cap Fund, Parnassus Growth Equity Fund and Parnassus Value Equity Fund (constituting the Parnassus Funds), and Parnassus Core Equity Fund and Parnassus Fixed Income Fund (constituting the Parnassus Income Funds) (hereafter collectively referred to as the "Funds") as of December 31, 2022, the related statements of operations and of changes in net assets for each of the periods indicated in the table below, including the related notes, and the financial highlights for each of the periods indicated in the table below (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of each of the Funds as of December 31, 2022, the results of each of their operations and the changes in each of their net assets and each of the financial highlights for the periods indicated in the table below, in conformity with accounting principles generally accepted in the United States of America.

Fund	Statement of Operations		Statement of Changes in		Financial Highlights
			Net Assets
Parnassus Fixed Income	For the year ended		For each of the two years in		For each of the two years in
Fund	December 31, 2022		the period ended December		the period ended December
		31, 2022		31, 2022
Parnassus Core Equity	For the year ended		For each of the two years in		For each of the two years in
Fund	December 31, 2022		the period ended December		the period ended December
		31, 2022		31, 2022
Parnassus Value Equity	For the year ended		For each of the two years in		For each of the two years in
Fund	December 31, 2022		the period ended December		the period ended December
		31, 2022		31, 2022
Parnassus Mid Cap Fund	For the year ended		For each of the two years in		For each of the two years in
	December 31, 2022		the period ended December		the period ended December
		31, 2022		31, 2022
Parnassus Mid Cap Growth	For the year ended		For each of the two years in		For each of the two years in
Fund	December 31, 2022		the period ended December		the period ended December
		31, 2022		31, 2022
Parnassus Growth Equity	For the period December		For the period December		For the period December
Fund	28, 2022 (commencement		28, 2022 (commencement		28, 2022 (commencement
	of operations) through		of operations) through		of operations) through
	December 31, 2022		December 31, 2022		December 31, 2022

The financial statements of Parnassus Mid Cap Growth Fund, Parnassus Mid Cap Fund, Parnassus Core Equity Fund, Parnassus Value Equity Fund and Parnassus Fixed Income Fund as of and for the year ended December 31, 2020 and the financial highlights for each of the periods ended on or prior to December 31, 2020 (not presented herein, other than the financial highlights) were audited by other auditors whose report dated January 28, 2021 expressed an unqualified opinion on those financial statements and financial highlights.

Basis for Opinions

These financial statements are the responsibility of the Funds' management. Our responsibility is to express an opinion on the Funds' financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Funds in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits of these financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. Our procedures included confirmation of securities owned as of December 31, 2022 by correspondence with the custodian and broker; when replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinions.

/s/PricewaterhouseCoopers LLP

San Francisco, CA

January 27, 2023

We have served as the auditor of one or more investment companies in Parnassus Funds and Parnassus Income Funds since 2021.

PricewaterhouseCoopers LLP, 405 Howard Street, Suite 600, San Francisco, CA 94105

T: (415) 498 5000, www .pwc.com/us