Fig. 6

Strategic implication. (a) \(\Delta {\text{CCC}}\;{\text{bal}}.\) represents the difference of credit card company balance from RBS bank. \(\Delta {\text{EFX}}\;{\text{bal}}.\) represents the difference of Equifax balance from Equifax bureau. \(\Delta {\text{PB}}\;{\text{bal}}.\) represents the difference of protected balance calculated by RBS bank. (b) These three changes of debt are used as dependent variables because the balances are stock variables. Consumers’ standard short-term finance situation which are summarized through five dependent variables payment, spending, \(\Delta {\text{CCC}}\;{\text{bal}}.\), \(\Delta {\text{EFX}}\;{\text{bal}}.\), \(\Delta {\text{PB}}\;{\text{bal}}.\) is obtained by counterfactual analysis. (c) Compared with the standard finance control, $500 is applied to every account by two ways—BT offer or one-time cash back. There are three types of BT offer which are summarized in Table 1 as a, b, c. (a PD = 6 months and fee > $0. b PD = 12 months. c PD = 6 months and fee = $0.). Using counterfactual analysis, how much consumers’ short-term finance can be impacted are estimated for two ways. After comparing the effects of BT offer and cash back through absolute value of coefficients, the best strategy between BT offer and cash-back offer can be achieved by the maximum one