Given $2500 dollars monthly tell how you would save money paying all discretionary bills like Budget Billing for Electricity, Water, Sewage, Groceries, Rent, Insurance, and Medical needs. Remember utilities in the warmer months are usually less than in the winter. Food for Thought. INCLUDE RENT, GROCERIES, BILLS, AND SPENDING MONEY, SAVINGS ACCOUNT ETC.. BE REALISTIC DO RESEARCH ON WHAT THE AVERAGE COST OF RENT IN YOUR AREA IS, THE AVERAGE FOR THE WATER, CABLE AND ELECTRIC BILL, GROCERY BILL IS. AND LASTLY WHAT YOU WOULD WANT TO SPEND THE REST ON.