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- Case study
- 24th Jan 2019
Building capacity and ensuring timely tax returns
Working with the Indonesian Tax Authority (Direktorat Jenderal Pajak, or DJP) on our second project together, we ran our largest randomised controlled trial with 11.2 million taxpayers.
- Report
- 24th Jan 2019
The Behavioural Insights Team Annual Update Report 2017-18
Latest results from the team, covering issues from healthcare to humanitarian aid.
- Report
- 19th Oct 2018
Reducing Tax Return Errors in Form 1770 in Indonesia
The aim of this project was to reduce common errors that Indonesian taxpayers make when completing certain sections of their tax return form. In an online experiment using BIT’s Predictiv platform, we tested the impact of a two-page FAQ flyer on accuracy when completing the form. Compared to participants who…
- Report
- 19th Oct 2018
Encouraging Earlier Tax Returns in Indonesia
In Indonesia, as in other countries around the world, a large proportion of taxpayers file their taxes at the last minute. This leads to long queues in front of tax offices and crashes of the online system around the deadline, which erodes tax morale and puts pressure on the system.…
- Academic publication
- 12th May 2018
Testing Local Descriptive Norms and Salience of Enforcement Action: A Field Experiment to Increase Tax Collection
The use of behavioural science interventions, and particularly social norms, in tax compliance has become a growth industry for scholars and practitioners alike in recent years.
- Academic publication
- 28th Apr 2017
Failure to CAPTCHA Attention: Null Results from an Honesty Priming Experiment in Guatemala
We report results from a large online randomised tax experiment in Guatemala. The trial involves short messages and choices presented to taxpayers as part of a CAPTCHA pop-up window immediately before they file a tax return, with the aim of priming honest declarations.
- Blog
- 22nd Sep 2016
Increasing tax payments in Costa Rica
Over the past few years, BIT has implemented a number of successful trials using letters to remind people to pay their taxes. In March 2015, we ran our first trial in Costa Rica. In this case we tested sending emails - an even lower cost intervention than letters. Working with…
Also available in: Español
- Academic publication
- 21st Jun 2016
Casting the Tax Net Wider: Experimental Evidence from Costa Rica
The majority of firms in developing countries are informal, and encouraging them to register with the tax authority has proven challenging and costly.
- Academic publication
- 15th Jun 2016
Behavioral Interventions in Tax Compliance: Evidence from Guatemala
This paper presents results from a large (43,387) nationwide randomized controlled trial in Guatemala that used reminders to promote tax compliance.
- Blog
- 18th Mar 2016
Sugar tax: how will it affect behaviour?
One of the most striking announcements in this week’s UK budget was the introduction of a new ‘soft drinks levy’ (quickly dubbed the sugar tax), which will come into force in 2018. New taxes aren’t usually associated with the Behavioural Insights Team - partly because BIT’s preference is to find…