Abstract: The evaluation study is focused on the function of money in management of economic and business processes. We have postulated a daily or yearly time potential of a state as a commodity for its time-based money system. Namely, we have defined a new currency, called a "TBM" (for a Time-Based Money) as a value of the GDP per capita of a specific state divided by the number of minutes per year (525600). We have calculated TBM values for the USA and for the Czech economies in Span of 2011-2015 years. We have found that the TBM is an appropriate tool for comparison of economic performances of individual states and also for evaluating a quality of monetary policy of states and for checking a quality of fulfilling specific tasks by central bank authorities-like the Board of Governors and the Federal Open Market Committee in the USA or the Board of Governors of the Czech National Bank while implementing the monetary policy.