The IFLR1000 2020 research will begin in January 2019. Please see all the key dates and futher detail below.

Please register your firm's interest in taking part by completing the form in the link below. We will email all registrants the 2020 research form and submission guidelines in January.




The IFLR1000 is the guide to the world's leading financial and corporate law firms and lawyers. Our first rankings were published in 1990 and we currently research over 120 jurisdictions worldwide.

IFLR1000 researches and ranks law firms and lawyers on the basis of transactional advice. Each annual research process culminates in the publication of law firm rankings, individual lawyer ratings and firm editorial reviews. 

There is no cost to particpate in the research, or to be ranked.



The practice areas we produce rankings for vary by country depending on the volume of work generally seen in a market.

To view the practice areas we produce rankings for in your jurisdiction, see our ranking tables by jurisdiction PDF.

To view the type of work that can be submitted as evidence for each practice area, see our practice area definitions PDF.

The research incorporates the following core* practice areas:

  • Banking and finance
  • Capital markets
  • M&A (including private equity)
  • Project development
  • Restructuring and insolvency

*We do not research these ranking categories in all jurisdictions, and in some jurisdictions we also research competition, financial services regulatory, and investment funds. 


IFLR1000 2020 research timeline 

  • Research begins: January 2019
  • Submission deadline: April 5, 2019*
  • New rankings and editorial published in print and online: November 2019

*We cannot guarantee client referees submitted later than April 5, 2019 will be contacted.

If you need an extension to the initial submission deadline, please contact Ben Naylor ( We cannot guarantee submissions received later than May 31, 2019 will be taken into account when determining the new rankings, or that these firms will receive editorial coverage in print or online.


Research process

  • If you work for a law firm that advises on transactional work relevant to our ranking categories for your jurisdiction, you can participate in the research by completing the research form.
  • Firms can submit one research form for each practice area category in its country. To view which practice areas we produce rankings for in your jurisdiction, view our ranking tables by jurisdiction PDF.
  • The research form asks for basic information on the structure and focus of the practice, recent changes to the team, and up to 20 highlight deals per practice area. In the 2020 research cycle, highlight deals should be mandates which the firm has done substantial work on since January 1, 2018, or which closed after this date.
  • Firms can provide an unlimited number of client referees in support of submissions. All referees provided by the initial submission deadline (see above) will be contacted by e-mail to ask for feedback on firms' and lawyers’ work.


Ranking / rating methodology

Our law firm rankings are based on three key criteria:

  • Transactional evidence - We ask all firms to provide transactional highlights from their recent work.
  • Client feedback - We survey tens of thousands of corporate and in-house contacts from a wide range industries as part of our Client Feedback Survey to get their opinions on the firms and lawyers they use.
  • Peer feedback - We conduct an online Lawyer Survey of senior lawyers to get their thoughts and feedback on the market. 

Transactional evidence

  • Transactional evidence is the decisive factor we use to determine a firm’s ranking. For a firm to be ranked, it must a have track record of advising on transactional work relevant to our ranking categories. The same applies to the ratings of individuals. Lawyers must have been working on significant deals in some capacity to be rated.
  • Primarily firms submit deals to us via the research form. Our research team also monitors daily deal news and updates to complement this.
  • We analyse statistical evidence of transaction values and volumes produced by external publications.

Client feedback 

  • We contact client referees as part of our Client Survey to get their opinions on both the firms and lawyers they use.
  • Client feedback is used in support of transactional evidence when determining a firm’s ranking or lawyer’s rating. What this means is good feedback alone will not ensure a firm or lawyer is ranked or rated – a firm or individual must be experienced in advising on significant transactional work.
  • When you submit you should try and provide referees for all the lawyers at the firm you feel should be rated. A lawyer working on significant deals who receives a reasonable amount of good client feedback is more likely to be rated.

Peer feedback

  • During each research cycle we conduct an online Lawyer Survey of senior lawyers to get their thoughts and feedback on the firms and lawyers in their markets. All partners and senior lawyers active in work relevant research to our ranking categories are invited to participate.
  • We conduct a significant number of phone and face-to-face interviews with practitioners, where we ask for feedback on firms and discuss trends. By discussing market trends we are able to gain a better understanding of what the most significant deals in the market have been recently, which helps us assess work submitted to us.
  • Peer feedback can be particularly useful for individual ratings as lawyers are well placed to recognise the leaders in their own practice areas.
  • Peer feedback is secondary to client feedback and we only take this type of feedback into account where it is supported by deal evidence. 


Why participate?

Actively engaging with our research team ensures:

  • Editorial coverage in the guide*.
  • Accurate and in-depth representation of your firm’s activities.
  • Potential market endorsement in a well-established, highly-regarded independent guide.
  • Exposure to our audience of in-house counsel at the world’s most significant corporations and financial institutions, and private practice lawyers.

*Our editorial policy dictates that all firms which participate in the research, and provide relevant examples of transactional work, are guaranteed editorial coverage.


IFLR1000 United States 2019

The research for the second edition of IFLR1000 United States – our state-by-state research in the United States – is underway.

Submission deadline: January 18, 2019

IFLR1000 United States research guidelines