A taxpayer is a person or organization (such as a company) subject to pay a tax. Modern taxpayers may have an identification number, a reference number issued by a government to citizens or firms. The term "taxpayer" generally characterizes one who pays taxes. A taxpayer is an individual or entity that is obligated to make payments to municipal or government taxation-agencies. Taxes can exist in the form of income taxes and/or property taxes imposed on owners of real property (such as homes and vehicles), along with many other forms. People may pay taxes when they pay for goods and services which are taxed. The term "taxpayer" often refers to the workforce of a country which pays for government systems and projects through taxation. The taxpayers' money becomes part of the public funds, which comprise all money spent or invested by government to satisfy individual or collective needs or to generate future benefits. For tax purposes, business entities are also taxpayers, making their revenues and expenditures subject to taxation. Taxes on income The government levy income taxes on personal and business revenue and interest income. In addition to income taxes, the government can also mandate that employers subtract payroll taxes from their workers’ paychecks each pay period, and then match the sums deducted. Capital gains taxes are those paid on any profits made from the sale of an asset and are usually applied to stock and bond transactions. Estate taxes are imposed on the transfer of property upon the death of the owner. Taxes on property Property tax, sometimes known as an ad valorem tax, is imposed on the value of real estate or other personal property. Property taxes are usually imposed by local governments and charged on a recurring basis. Real estate taxes are often subject to fluctuation based upon a jurisdiction’s assessment of the worth of a property based on its condition, location and market value, and/or changes to the amounts apportioned to various recipients of the tax.