Partner visa (subclass 801) is a permanent visa that allows the de facto or spouse of an Australian citizen, permanent resident or eligible New Zealand citizen live to in Australia permanently. This visa is usually for people who currently hold a temporary Partner visa (subclass 820) to apply for the permanent one.
As this visa is a continuation of the temporary partner visa, you must wait until 2 years to lodge the permanent partner visa application after you have lodged the temporary one.
You will be eligible to apply for this visa if your relationship is continuing and genuine, and your spouse or de facto partner is still your sponsor. To prove your relationship, you can provide evidence of your finances, household, social matters and commitment to a long-term relationship with each other.