Nashua has one or more tax consultants who can be hired. A tax consultant is a professional who is an expert in the field of taxation. He can have specialization in the tax deduction structures of specific fields. He assists his client in filing accurate tax returns, claiming refunds and benefits, as well as ways to save money and invest instead of having to pay a big amount of tax, as well as with the payment of the tax itself. A tax, in simple words, is a deduction made by the federal and state government for carrying out various federal and state functions and projects. It is calculated on the basis of income or money earned, and is either deducted at source, or has to be declared by an individual or a company separately.