Ключевые слова: budget, budget management, capital, cash, coin, coin purse, cost, credit, currency, deposit, digital, digital cash, digital wallet, earn, economy, electronic money, exchange, expenditure, expenses, fee, finance, funnel, hand, internet, investment, laptop, loan, method, money, mortgage, online, payment, profit, richness, saving, service, solution, stock exchange, system, technology, transfer, virtual, wallet, wealth, web,