What is the best accounting dissertation topic, in conjunction with taxation?

what is the best accounting dissertation topic, in conjunction with taxation?

taxation is not an accounting dissertation topic, that is an economics topic as it results from government policy. If you want to be contraversial talk about accounting for the time value distortions

There is no "best" topic. The topic needs to be best for YOU, to be interesting and something you will enjoy researching and working on. Google to find sites that list accounting dissertation topics.