Joint ownership but all income in one account

Hello My husband and I are renting out our flat and all of the income currently comes to my account. Do we both need to submit a self assessment? Or is it only me as the income comes to me? If we both do one is there a place in the form for splitting the income? This is our first year of being landlords. Thanks for your advice!

Hi,
The default for married couples and civil partners is 50/50 split.  
The only other alternative is a split based on the actual share of ownership of the property.  
To do this please follow the guidance at Declare beneficial interests in joint property and income.  
In either case, both of you will need to complete a self assessment tax return, so that you can declare your share of the income from the property.
Thank you.