Do Odd Jobs- If you are not getting enough pocket money then get money from parents in some other ways. Start doing some odd jobs for both your father and mother. For example, you may serve the food on table after your mother prepares it. Or you might also fetch the newspaper for your dad and manage his book rack once in a while. This will give them a feeling of that you have become responsible. Your parents will understand that you are responsible enough not to squander any excess money if it is given to you.
Teach Your Younger Siblings- You can earn easy pocket money by taking up tuitions for your younger siblings. Younger siblings who are being taught by your parents or attend tuitions are an excellent means to earn pocket money from parents. What you all need to do is convince them that you are interested to teach your younger brother or sister in your free time. And also try to convince your parents to give you some extra pocket money for the same. This is like giving tuitions at home and earning some well deserved pocket money for your efforts.
Buy Gifts- Save some pocket money and gift your parents a card or flowers occasionally. They will come to realise that you have an intent to save money and not squander all of it. They will on start thinking of increasing your pocket money on their own accord after a certain period of time. After all, who doesn't like gifts and a bit of flattering.
Convince Them- Nothing better works than a clear conversation between two people. So, talk to your parents in a clear words about your needs and try to make them understand your needs. You may quote the increased cost of food items and other stationeries that you sometimes fancy to buy. They are rational enough and you will surely get more money from your parents if they consider your demand essential.
Try all these measures to earn more monthly allowance from parents. But remember to make proper use of it. Squandering money has never done any good to any one.