During the year ending December 31, 2020, Mary Peters has employment income before the deduction of any RPP contributions of $40,000, a net rental loss of $16,000, interest income of $6,000, and income from royalties of $7,000. The royalties were on a book written by Ms. Peters in her undergraduate years at university. She has no Unused RRSP Deduction Room from previous years.

Ms. Peters is a member of a money purchase Registered Pension Plan in which, during 2020, she has contributed $2,000 and her employer has contributed $3,000. Her maximum deductible Registered Retirement Savings Plan contribution for 2021 is ?