EX-99.CERT 2 ex-99cert.htm 302 CERTIFICATIONS CERTIFICATIONS 


Item 12(a)(2).
 
  CERTIFICATIONS 
 
I, James S. Riepe, certify that: 
 
1.   I have reviewed this report on Form N-CSR of T. Rowe Price New Income Fund; 
 
2.   Based on my knowledge, this report does not contain any untrue statement of a 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 officer(s) and I are responsible for establishing and maintaining 
   disclosure controls and procedures (as defined in rule 30a-3(c) under the Investment Company Act 
   of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the 
   Investment Company Act of 1940) for the registrant and have: 
 
  (a) Designed such disclosure controls and procedures, or caused such disclosure controls and 
    procedures to be designed under our supervision, 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) Designed such internal control over financial reporting, or caused such internal control over 
    financial reporting to be designed under our supervision, 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; 
 
  (c)  Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in 
    this report our conclusions about the effectiveness of the disclosure controls and procedures, as of 
    a date within 90 days prior to the filing date of this report based on such evaluation; and 
 
  (d)  Disclosed in this report any change in the registrant’s internal control over financial reporting that 
    occurred during the second fiscal quarter of the period covered by this report that has materially 
    affected, or is reasonably likely to materially affect, the registrant’s internal control over financial 
    reporting; and 
 
5.   The registrant's other certifying officer(s) and I have disclosed to the registrant's auditors and the 
   audit committee of the registrant's board of directors (or persons performing the equivalent 
   functions): 
 
  (a)  All significant deficiencies and material weaknesses in the design or operation of internal control 
    over financial reporting which are reasonably likely to adversely affect the registrant's ability to 
    record, process, summarize, and report financial information; and 
 
  (b)  Any fraud, whether or not material, that involves management or other employees who have a 
    significant role in the registrant's internal control over financial reporting. 

Date:  July 20, 2005  /s/ James S. Riepe 
    James S. Riepe 
    Principal Executive Officer 

 
  CERTIFICATIONS 
 
I, Joseph A. Carrier, certify that: 
 
1.   I have reviewed this report on Form N-CSR of T. Rowe Price New Income Fund; 
 
2.   Based on my knowledge, this report does not contain any untrue statement of a 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 officer(s) and I are responsible for establishing and maintaining 
   disclosure controls and procedures (as defined in rule 30a-3(c) under the Investment Company Act 
   of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the 
   Investment Company Act of 1940) for the registrant and have: 
 
  (a) Designed such disclosure controls and procedures, or caused such disclosure controls and 
    procedures to be designed under our supervision, 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) Designed such internal control over financial reporting, or caused such internal control over 
    financial reporting to be designed under our supervision, 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; 
 
  (c)  Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in 
    this report our conclusions about the effectiveness of the disclosure controls and procedures, as of 
    a date within 90 days prior to the filing date of this report based on such evaluation; and 
 
  (d)  Disclosed in this report any change in the registrant’s internal control over financial reporting that 
    occurred during the second fiscal quarter of the period covered by this report that has materially 
    affected, or is reasonably likely to materially affect, the registrant’s internal control over financial 
    reporting; and 
 
5.   The registrant's other certifying officer(s) and I have disclosed to the registrant's auditors and the 
   audit committee of the registrant's board of directors (or persons performing the equivalent 
   functions): 
 
  (a)  All significant deficiencies and material weaknesses in the design or operation of internal control 
    over financial reporting which are reasonably likely to adversely affect the registrant's ability to 
    record, process, summarize, and report financial information; and 
 
  (b)  Any fraud, whether or not material, that involves management or other employees who have a 
    significant role in the registrant's internal control over financial reporting. 

Date:  July 20, 2005  /s/ Joseph A. Carrier 
    Joseph A. Carrier 
    Principal Financial Officer