submit self assessment or not?

last year i submitted sa as my income was about £100 over pa limit. This year I sold interest in rental property for Circa 70,000, but my income will be below personal allowance. I declared and paid cgt within 60 days of sale. 1) Will i need to submit sa? 2) My wife didn't submit sa last year due to low income,same this year, but as she also sold her share in above property, also for 70K, declared and paid cgt, will she need to submit sa? I have had conflicting advice......

Hi,
Please refer to the link below for guidance:
Who must send a tax return
Thank you