If you live in Washington State,

mail forms 1040, 1040A, 1040EZ or 1040X to

Internal Revenue Service, Fresno, CA 93888

Mail estimated payments (1040ES Vouchers) to

Internal Revenue Service, PO Box 510000, San Francisco, CA 94151-5100

If you live an another state, are filing Form 4868, or are filing a business return, please consult your tax professional or search irs.gov for current mailing addresses.