Two experiments on taxation-related behavior in Ethiopia

Last registered on July 29, 2024

Pre-Trial

Trial Information

General Information

Title
Two experiments on taxation-related behavior in Ethiopia
RCT ID
AEARCTR-0014055
Initial registration date
July 23, 2024

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
July 29, 2024, 5:13 PM EDT

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Locations

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Primary Investigator

Affiliation
University of Copenhagen

Other Primary Investigator(s)

PI Affiliation
Addis Ababa University
PI Affiliation
University of Washington
PI Affiliation
Food and Agricultural Organization

Additional Trial Information

Status
In development
Start date
2024-07-01
End date
2024-12-31
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
Public revenue generation has long been associated with economic development (Schumpeter 1918; Kaldor 1963; Bessley and Persson 2013). Yet, at center of obstacles to public revenue generation is information asymmetry (Pigou 1920; Ramsey 1927; Mirrlees 1971; Farhi and Gabaix 2020). In developing countries where there is lack of basic administrative capacity and necessary transaction information, estimation of taxable amount for small and medium enterprises (SMEs) remains a big problem despite accounting for more than half of total employment (World Bank 2019) and increasingly playing a key role in their economies (Joshi et al. 2014; Schneider et al. 2010). One recent example can be seen in Ethiopia where efforts by the government to collect taxes from SMEs resulted in wide-scale political protests and declaration of national emergency (Davison 2017). Such incidents highlight the importance of identifying effective interventions to overcome information asymmetries and improve public revenue generation (Mascagni et al. 2018; Abate 2019). In response, we propose a randomized controlled trial (RCT) to rigorously test and analyze the effectiveness of two different low-cost promising interventions proven in other related contexts: 1) religious oaths and 2) incentive compatible solicitation of peer information.
External Link(s)

Registration Citation

Citation
Belay, Dagim et al. 2024. "Two experiments on taxation-related behavior in Ethiopia." AEA RCT Registry. July 29. https://doi.org/10.1257/rct.14055-1.0
Sponsors & Partners

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Experimental Details

Interventions

Intervention(s)
The first intervention involves priming business owners by asking them to take a religious oath to report their taxable sales/profit accurately.

The second intervention involves an incentivized exercise to elicit information about neighboring businesses from business owners. In one treatment arm, business owners will be informed that information from the exercise may be shared with the tax authority. In some (randomly selected) cases, information from peers will be shared with the tax authority.
Intervention Start Date
2024-07-23
Intervention End Date
2024-08-15

Primary Outcomes

Primary Outcomes (end points)
Profit tax payment likelihood and amount
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Our main secondary outcomes will be other business details as reported to the tax authority.

Within the peer information experiment, we will also look at the quality of reported information (between the two treatment arms), assessed against observation-based estimates of taxable profits for select businesses as well as within-respondent and cross-respondent validation.

Budget permitting, we will also explore mechanism-related secondary outcomes, including attitudes about taxation and tax fairness, perceptions of local tax compliance, and other outcomes around business performance, tax compliance and receipt issuance.
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Businesses in a large neighborhood in Addis Ababa will be grouped together based on proximity. Groups of businesses will be randomized into control, the religious priming treatment, and the two peer information elicitation treatment groups.
Experimental Design Details
Not available
Randomization Method
Randomization done in office by a computer
Randomization Unit
Clusters of geographically proximate firms
Was the treatment clustered?
Yes

Experiment Characteristics

Sample size: planned number of clusters
400 clusters of firms
Sample size: planned number of observations
2000 firms
Sample size (or number of clusters) by treatment arms
100 block control, 100 block religious priming, 100 block peer prediction, 100 blocks peer prediction (with sharing)
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB

Institutional Review Boards (IRBs)

IRB Name
Addis Ababa University
IRB Approval Date
2023-12-21
IRB Approval Number
N/A