If you are receiving a pension from your SMSF, you (the trustee) must ensure that you have met the minimum pension requirements, per Clause 1 of Schedule 7 of the Superannuation Industry Supervision Regulations (SISR 1997).
This is done with the formula: account balance X percentage factor.
Account balance: Is the value of the pension on 1 July in the financial year in which the payment is made.
Percentage factor: A table of percentage factors is outlined in Schedule 7 of SISR 1997.