Peter and Heidi Mathews are married and are both 50-year-old Australian residents. During the 2020-21 tax year, Heidi earned $35,000 of assessable income from carrying on her florist shop business. Heidi’s total superannuation balance on 30 June 2018 was $400,000. To help Heidi build up her superannuation, Peter contributed $5,000 to her complying superannuation fund in 2020-21. Heidi also made $15,000 of contributions to her fund in 2021 and notified the trustee that she would be claiming deductions for this amount.

Required: Advise all parties of the tax consequences of making these superannuation contributions citing relevant legislation to support your answer.