It is important that you tell us how much you get from each benefit seperately, as different rules apply to income from different benefits.
If you have an award letter from the Department for Work and Pensions then this will tell you the name of the benefit(s) you receive. This is the best way to find out how much you currently receive in benefits.
Alternatively, when DWP put money into your bank account there is normally a label attached to the relevant line on your bank statement showing the initials of the benefit you get.
Please note that you do not need to enter income from means-tested benefits, as the calculator will work these out. So ignore any income you get from Pension Credit, Income Support, JobSeeker's Allowance (income-based), Employment and Support Allowance (income-related) and Universal Credit.
Please also note that if you pay tax it is important that you enter your net income from benefits, after any tax due has been paid.