Ключевые слова: 15, 1040, accounting, america, american, april, background, bill, budget, business, calculate, cash, concept, credit, currency, document, dollar, federal, file, fill, finance, financial, form, government, hundred, income, individual, internal, law, legal, money, number, paper, paperwork, pay, paying, payment, pen, refund, return, revenue, savings, service, state, tax, taxation, time, us, usa,