Tax return

I've got a buy-to-let property and trying to submit my tax return. The monthly rental is GBP1000 but the running cost includes management fee for letting agent, factor fee and sometimes with the cost of maintenance. Do I need to input GBP1000 as my total income or just input the final income after deduction from those expenditure?

Hi,
 

Thank you for your question you include the income before expenses first then put down the total expenses and then the taxable profit is the renatl less the expenses  . Thank you.