Q&A: Does the previous year's balance affect the minimum pension amount?

Q: My wife and I are both over 70 and are the only members of our SMSF. On 30 June, my wife had a nil balance in our SMSF but will make a $300,000 non-concessional contribution in July and commence an account-based pension at the 5% rate. Does her nil balance in the previous financial year predetermine the amount of pension she is permitted to take, from an ATO perspective?