Packaged Wills are available to buy and complete yourself. It’s recommended that you only make a Will yourself if your estate is simple and below the current Inheritance Tax threshold of £325,000.
If your estate is above the threshold, it important to seek legal advice when writing your will. A solicitor can help you to understand all the options available, such as using the residence nil rate band available from 6 April 2017, that may reduce any liability to Inheritance Tax. For more information see: GOV.UK Inheritance tax: residence nil band rate (RNRB)