This paper analyzes drivers of rising per-pupil public education spending, including Baumol’s “cost disease” effect. Higher wages paid to teachers contributed significantly to the increase in per-pupil spending over the past decades. Empirical analyses using a large dataset of advanced and developing economies show that the contribution of Baumol’s effect was much smaller than impled by theory. Rather, the spending inccrease reflects rising wage premiums paid for teachers in excess of market wages, especially in middle-income countries. The strong wage premium effect suggests that institutional characteristics that govern teachers’ wage setting are key determinants of education expenditure.

Firm-level Digitalization and Resilience to Shocks: Role of Fiscal Policy

Using cross-country data, this note explores the potential impact of selected digital technologies on tax collection and compliance. The analysis makes use of multi-dimensional International Survey on Revenue Administration, Tax Administration Diagnostic Assessment Tool, and Revenue Administration-Gap Analysis Program (RA-GAP) data with results indicating that digital technologies could help enhance tax collection, but with effects that vary by the type of specific digital service or tools introduced. While the results demonstrate a strong association between digital tax administration operations and improved performance outcomes, the realization of revenue gains is heavily contingent on accompanying policy, legislative, and administrative reforms, as well as the availability of adequate digital connectivity and capable tax administration staff. The cross-country approach provides reasonable upper-bound estimates on revenue gains, which, however, need to be carefully validated with country-specific case studies. The note reviews single country case studies from selected micro-economic literature that complement the cross-country results and reveal key enabling factors necessary to reap and sustain the benefits of new digital investments.

This paper explores how digitalization in the corporate sector can boost tax revenue collection,. finding that stronger firm digitalization is associated with higher tax revenues across countries and also higher tax paid across firms. The cross-country estimates illustrate that a one-standard-deviation increase in firm digitalization is associated with an increase in tax revenues-to-GDP by up to 3 percentage points, conditional upon the level of digitalization of tax administration (GovTech). A firm-level analsis reveals that firm digitalization significantly improves tax compliance among high-risk taxpayers, such as small and informal enterprises, particularly in the service sector. This indicates that digitalization not only broadens the corporate tax base but also plays a crucial role in improving tax compliance. Moreover, both country and firm-level analyses reveal a significant synergy between firm digitalization and GovTech, undescoring the importance of promoting both to enhance tax collection. These analyses also suggest that, in developing countries, it is essential to create enabling environments for firm digitalization and GovTech and address any constraints to achieve their synergy effects.

Public-private partnerships (PPPs) have increased rapidly in emerging and developing countries, creating both opportunities and fiscal challenges. One of the main challenges is that while governments have increased commitments in guarantees and direct subsidies to promote PPPs, contractual disputes remain high with significant costs. This paper examines how fiscal institutions affect the selection of PPP contracts and the probability of contract disputes using about 6,000 PPP contract-level data. The analysis shows that larger government financing needs, lower budget transparency and bureaucratic efficiency are associated with higher probability for governments to offer guarantees. Propensity score matching results show that disputes are more common for guaranteed contracts due to adverse selection and contingent liability effects. PPP management quality and budget transparency are found to be key determinants for a longer survival of PPPs.

Digital divide across countries and within countries continues to persist and even increased when the quality of internet connection is considered. The note shows that many governments have not been able to harness the full potential of digitalization. Governments could play important role to facilitate digital adoption by intervening both on supply (investing in infrastructure) and demand side (increase internet affordability). The note also documents significant dividends from digital adoption for revenue collection and spending efficiency, and for outcomes in education, health and social safety nets. The note also emphasizes that digitalization is not a substitute for good governance and that comprehensive reform plans embedded in National Digital Strategies (NDS) combined with legal and institutional reforms are needed to ensure that governments can reap full benefits from digitalization and manage the risks appropriately.

Despite the criticality of tax administration (TA) reforms in enhancing domestic revenue mobilization, few studies have attempted to quantify the revenue impact of such reforms. This paper fills this gap by estimating the revenue yields associated with various tax administration capabilities, based on the International Survey on Tax Administration (ISORA), the Tax Administration Diagnostic Assessment Tool (TADAT), and TA reform episodes datasets (identified by Akitoby et al., 2020). It uses a Hausman-Taylor cross-country panel regression and an event study for specific TA reform episodes. Our results (using the ISORA data) show that an increase in the overall strength of TA from the 40th percentile to the 60th percentile is associated with an increase in tax revenue by 1.8 pp. of GDP (with a 95 percent confidence range of 0.5‒2.6 pp. of GDP). Similarly, the event-study assessment shows that sustained TA reforms led to an increase in tax revenues between 2 to 3 pp. of GDP, in line with the experience in three country cases (Jamaica, Rwanda, and Senegal). Also, the revenue yields are increasing over time to more than 3 pp. of GDP after the 6th year following a comprehensive reform. The analysis also highlights the significant impact of specific measures including: i) strengthening compliance risks management, ii) enhancing public accountability, iii) establishing Large Taxpayer Offices (LTO), iv) strengthening accountability and transparency, and v) enhancing timely filing of tax declarations.

How could the GovTech improve budget processes and execution efficiency? Could the GovTech strengthen redistributive function of public expenditure? Based on an event-study method, this paper finds that the introduction of digital budget payments and e-procurement could significantly enhance budget transparency and help expand the coverage of social assistance to reach the most vulnerable population. Exploiting staggered adoption of digital budget payments, a synthetic control regression identifies meaningful increase in pre-tax income shares among the bottom 50th percentile and female workers, especially for emerging market and developing countries, with effects materializing gradually over 10-year period. The paper delves into the potential mechanism driving these equity benefits, highlighting the reduction in business informality as a primary channel. However, the paper emphasizes that the mere adoption of GovTech strategies or digital technologies is insufficient to unlock its full potential. The outcomes are intricately linked to supporting policies, regulations, organizational and system integration, and robust digital connectivity. The paper underscores that inter-agency coordination facilitated by a dedicated GovTech institution emerges as a critical factor for reaping both efficiency and equity gains from GovTech initiatives.

Over the past decade, Lesotho and Swaziland have faced significant volatility in their fiscal revenues, owing to highly unstable Southern African Customs Union (SACU) receipts. Based on model analysis, this paper explores the advantages of implementing fiscal rules to deal with such volatility. It finds that the use of a structural balance target could smooth the growth impact from revenue shocks while helping preserve sufficient international reserves during bad times. From a long-term perspective, it suggests possible welfare gains from introducing fiscal rules. Last, it concludes that, based on experiences in other countries, developing strong institutions and improving public financial management are necessary steps to ease the transitions to a rules-based fiscal policy framework.