The January 31st deadline is coming up for online tax returns for 2011/12. Many leave it till the last minute which is all right if the tax man owes you. Be aware that if you have never done your tax return online that you have to register for your user ID and Pin number which could take a week to arrive. To apply you need your Unique Tax reference and National insurance number. Oak Booking Services now offer Self-Assessment Tax Returns as one of its services.