EXHIBIT 99. CERT

I, Bryant Cherry, certify that:

1. I have reviewed this report on Form N-CSR of the Parnassus
Income Trust;

2. Based on my knowledge, this report does not contain any untrue
statement of material fact or omit to state a material fact
necessary to make the statements made, in light of the
circumstances under which such statements were made, not
misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other
financial information included in this report, fairly present in
all material respects the financial condition, results of
operations, changes in net assets, and cash flows (if the
financial statements are required to include a statement of cash
flows) of the registrant as of, and for, the periods presented in
this report;

4. The registrant's other certifying officers and I are
responsible for establishing and maintaining disclosure controls
and procedures (as defined in rule 30a-2(c) under the Investment
Company Act of 1940) for the registrant and have:
a)designed such disclosure controls and procedures to ensure that
material information relating to the registrant, including its
consolidated subsidiaries, is made known to us by others within
those entities, particularly during the period in which this
report is being prepared;
b)evaluated the effectiveness of the registrant's disclosure
controls and procedures as of a date within 90 days prior to the
filing date of this report (the "Evaluation Date"); and
c)presented in this report our conclusions about the effectiveness
of the disclosure controls and procedures based on our evaluation
as of the Evaluation Date;

5. The registrant's other certifying officers and I have
disclosed, based on our most recent evaluation, to the
registrant's auditors and the audit committee of the registrant's
board of trustees:
a)all significant deficiencies in the design or operation of
internal controls which could adversely affect the registrant's
ability to record, process, summarize, and report financial data
and have identified for the registrant's auditors any material
weakness in internal controls; and
b)any fraud, whether or not material, that involves management or
other employees who have a significant role in the registrant's
internal controls; and

6. The registrant's other certifying officers and I have indicated
in this report whether or not there were significant changes in
internal controls or in other factors that could significantly
affect internal controls subsequent to the date of our most recent
evaluation, including any corrective actions with regard to
significant deficiencies and material weaknesses.

March 8, 2004                                        Bryant Cherry
                                                     Vice President

                                               EXHIBIT 99. CERT

I, Jerome Dodson, certify that:

1. I have reviewed this report on Form N-CSR of the Parnassus
Income Trust;

2. Based on my knowledge, this report does not contain any untrue
statement of material fact or omit to state a material fact
necessary to make the statements made, in light of the
circumstances under which such statements were made, not
misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other
financial information included in this report, fairly present in
all material respects the financial condition, results of
operations, changes in net assets, and cash flows (if the
financial statements are required to include a statement of cash
flows) of the registrant as of, and for, the periods presented in
this report;

4. The registrant's other certifying officers and I are
responsible for establishing and maintaining disclosure controls
and procedures (as defined in rule 30a-2(c) under the Investment
Company Act of 1940) for the registrant and have:
a)designed such disclosure controls and procedures to ensure that
material information relating to the registrant, including its
consolidated subsidiaries, is made known to us by others within
those entities, particularly during the period in which this
report is being prepared;
b)evaluated the effectiveness of the registrant's disclosure
controls and procedures as of a date within 90 days prior to the
filing date of this report (the "Evaluation Date"); and
c)presented in this report our conclusions about the effectiveness
of the disclosure controls and procedures based on our evaluation
as of the Evaluation Date;

5. The registrant's other certifying officers and I have
disclosed, based on our most recent evaluation, to the
registrant's auditors and the audit committee of the registrant's
board of trustees:
a)all significant deficiencies in the design or operation of
internal controls which could adversely affect the registrant's
ability to record, process, summarize, and report financial data
and have identified for the registrant's auditors any material
weakness in internal controls; and
b)any fraud, whether or not material, that involves management or
other employees who have a significant role in the registrant's
internal controls; and

6. The registrant's other certifying officers and I have indicated
in this report whether or not there were significant changes in
internal controls or in other factors that could significantly
affect internal controls subsequent to the date of our most recent
evaluation, including any corrective actions with regard to
significant deficiencies and material weaknesses.

March 8, 2004                                        Jerome L. Dodson
                                                     President