Since moving into the role in September 2011, Readings has guided the New Zealand women's side in 55 games during which time the Football Ferns have recorded several of milestones as they have risen to their best world ranking of 16 in recent times.
In the first year of Readings' tenure, the team made history in reaching the quarterfinals of the London Olympics before winning the Valais Cup in Switzerland in 2013 while at the recent Fifa Women's World Cup in Canada, the side collected its best points return from the showcase event for women's football.
New Zealand Football CEO Andy Martin is delighted to have secured Readings for the next four years.
''Tony has overseen a period of rapid development for the Football Ferns on the world stage and we're thrilled he will be guiding the team in its next chapter,'' Martin said.
''What Tony and entire Ferns group have achieved in the last four years has built an excellent platform for even further success which will not only fuel the current group of players but also inspire the generation to follow.
''As we aim to reposition football in New Zealand the performance of the Football Ferns has been, and will continue be, a key factor in that push and in re-signing Tony we have secured one of the key people to influence that journey.''
Readings (39) said several factors made the decision relatively simple.
''Obviously, I'm very happy to have made this decision,'' Readings said.
''New Zealand Football have shown faith in me to carry on in the role and it was quite an easy decision really because we've got this great group of players and we're performing better than ever.
''We've just come back from the World Cup where we put in some personal-best performances and it's a great group of staff that I personally love working with.''
Readings said their first appearance in the last eight at the Olympics in 2012 was a watershed moment in the Football Ferns programme.
''Reaching the quarterfinals of the Olympics is probably the biggest highlight. Not just because of the achievement itself but I think it's the opportunities it's presented us since that point.
"Without that success we wouldn't have so much funding and support from High Performance Sport New Zealand.
''We've repaid a lot of the faith they showed in us and we've been able to surround the team with a lot more support and quality resource and we've been able to play a lot more games.''
