The gate reciepts are split 50/50 between ourselves and the opposition after certain costs have been accounted for such as policing and the away teams expenses.
This from the FA Cup competition rules:
23. PROCEEDS OF MATCHES PRIOR TO THE SEMI-FINALS
(a) The net gate receipts due from a match (except replayed matches in consequence of a breach of the Rules) shall be the total ticket sales for the match less VAT, the travelling expenses of the Visiting Club, the fees and expenses of the Match Officials, and other match expenses allowed under the Competition Rules (which include costs relating to gate attendants, turnstile operators, stewards, weather reports, police charges, floodlighting in accordance with the Competition Rules, contributions to the costs of First Aid Helpers and any costs relating to clearing the ground of snow and water provided the Visiting Club is consulted beforehand on the approximate costs). Any shortfalls in receipts are the responsibility of the home club and are not to be shared. The Council shall have the power from time to time to issue instructions as to what shall and shall not be allowed as a match expense.
(b) Net gate receipts shall be divided as follows:
(i) In matches prior to the Third Round of the Competition Proper (other than replayed matches in the Competition Proper), the net gate receipts of each match shall be divided equally between the competing Clubs.