EXHIBIT 23.1 INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in Registration Statement Nos.333-75801, 333-77211 and 333-85324 of MicroFinancial Incorporated on Form S-8 of our report dated March 30, 2004, appearing in this Annual Report on Form 10-K of MicroFinancial Incorporated for the year ended December 31, 2003. /s/ Deloitte & Touche LLP Boston, Massachusetts March 30, 2004