The contribution of personal income tax to gross national income is assessed in this study. Over the years, tax revenue has been an important government source of income to finance public goods and services. In Nigeria, the tax structure includes personal income tax (PIT) as well as other direct and indirect taxes. There is PIT collection by both the state and federal governments. This study examines the influence of PIT on aggregate income of the country from 2011 to 2020 using ordinary least squares method. The dependent variable is the gross national earnings while the independent variable is the personal income tax collected at the federal government level in Nigeria. The study finds corruption and inflation as two useful control variables that have direct influence and link with individuals' tax compliance in Nigeria. The data sources include the Organization for Economic Co-operation and Development (OECD) for PIT figures, Transparency International (TI) for Corruption Perceptions Index (CPI) data and World Bank Economic Indicators for Gross National Income (GNI) and inflation statistics. The empirical findings reveal that PIT has a significant positive influence on the gross national income. The moderating variables applied are not significant and could not explain the vicissitudes in the gross national earnings. The study recommends improvement in the PIT administration to boost tax revenue collections and remittances to the government treasury. Further suggestion by this study is that corruption and inflation should be minimized to enhance PIT collection at both federal and state government levels.

Due to the obvious ozone layer depletion and continual contamination of the air and water, environmental protection has become a global priority. In an environmentally challenged country like Nigeria, the difficulty of having clean water and air is a significant cause for environmental taxes to become unavoidable. Although these taxes are presently levied in the form of fines for gas flaring, gas exploration tax, and petroleum profit tax, which are 85 percent more than the standard business income tax of 30 percent of revenues. The argument is based on the fact that the business operations of the oil and gas sector cause a significant degree of pollution to the environment. As a result, this research looks at the influence of environmental taxes on CO 2 emission control in Nigeria. The research spans the years 2010 to 2020. According to the regression findings, the gas exploration tax has an inconsequential negative influence on CO 2 emission management, but the petroleum profit tax has a negligible positive impact on CO 2 emission control. On the other side, the cost of environmental preservation has a large beneficial influence on CO 2 emission control. As a result, the study suggests the implementation of more suitable environmental taxes and levies in order to lower pollution levels in Nigeria.

The incidence of bank fraud is a fundamental problem with diverse consequences to banks and their stakeholders. Therefore, this study examined the effect of the capability component of fraud theory on fraud risk management in Nigerian banks. The specific objectives of the study are to: examine the effect of malicious insider abuses on fraud risk management efficiency of Nigerian banking sector; evaluate the effect of internal control bypasses on fraud risk management efficiency of Nigerian banking sector; investigate the effect of information security breaches on fraud risk management efficiency of Nigerian banking sector, and ascertain the effect of fraud risk governance on fraud risk management efficiency of Nigerian banking sector. The study adopted ex-post factoresearch design. Secondary data were gathered from the quarterly report on fraud and forgeries of the Financial Institutions Training Centre (FITC) from the first quarter of 2011 to the second quarter of 2020 given a total of thirty-eight (38) observations. The dependent variable of the study was fraud risk management efficiency (FRMη) while the independent variables were malicious insider abuses (MIA), Internal Control Bypasses (ICB), Information Security Breaches (ISB), and fraud risk governance (FRG). Four hypotheses were formulated and tested using robust linear regression analysis. The study employed Stata 14.2 and SPSS 22 in data analyses. We also conducted Skewness/Kurtosis and Shapiro-Francia W’ normality tests, Variance Inflation Factor (VIF) of multicollinearity, Breusch-Pagan/Cook Weisberg test of heteroskedasticity, and Durbin-Watson test for autocorrelation. The results revealed statistically significant negative effects of internal control bypasses and information security breaches on fraud risk management efficiency. The study also found an insignificant positive effect of malicious insider threats and fraud risk governance on fraud risk management efficiency. The implication of these findings is that the Nigerian banking sector is confronted with both internal and external fraud capability challenges which require management attention and stakeholders’ education and awareness. Based on these findings, the study offers comprehensive fraud vulnerability suggestions integrating all banking stakeholders (internal and external) to improve fraud risk management efficiency in Nigerian banking sector.

This work examined the effect of Intellectual capital accounting on earnings generation of listed deposit money banks in Nigeria. The study adopted the ex-post facto research design and panel regression statistical technique, involving the use of time series and cross-sectional data. Data covered the period of eight-years (2011-2018); considering the total population of fourteen (14) listed commercial banks in Nigeria, random sampling was employed in selecting firms for this study involving eleven (11) listed deposit banks. Data were sourced secondarily from the firms' published annual financial statements. Value Added Intellectual Coefficient (VAIC) theory as developed by Pulic (1998) was adopted for this study. It was discovered from the findings that Intellectual Capital Accounting all have a positive and significant effect on gross earnings. Therefore, Intellectual Capital Accounting have a positive and significant effect on earnings generation of listed deposit money banks in Nigeria. In view of our findings managing directors of listed deposit money banks should carry out a proper implementation and regular monitoring of the systems, procedures and program (structural capital), all with an effective and efficient support from higher and middle line management, as this will ensure expansion in all frontiers of the business.

The research investigates the relationship between governmental capital spending and economic development in Nigeria. Several issues of the Central Bank of Nigeria's statistics bulletin were used in the research, which yielded a large amount of data. The data was submitted to a unit root test, which was performed using the Augmented Dickey fuller (ADF) method, in order to determine its time series characteristics. The variables' socioeconomic characteristics were obtained via the use of descriptive statistics. Because of the varying order of integration seen in the unit root, cointegration and regression analysis were carried out utilizing the ARDL- Autoregressive Distributed Lag method, which is an acronym for Autoregressive Distributed Lag. The results show that public capital investment has a negative and statistically significant (tcal = -2.6996) impact on the Nigerian economy, as assessed by the GDP growth rate, according to the data. The results demonstrate that when capital expenditures in Nigeria get the attention they deserve, they have the potential to contribute to economic development in the country. This research recommends that the government manage capital spending in an appropriate manner in order to enhance the nation's productive capacity and accelerate economic development in light of the results.