Deadline day for the 2026 summer transfer window is upon us, with big-money business being completed left, right and centre.Top-flight clubs have already spent well over £2billion this summer, with still plenty of time to splash more cash.Bradley Barcola’s switch to join Liverpool has been the biggest transfer of the summerGettyThere have been multiple record-breaking £100million-plus transfers made in the Premier League despite it being a World Cup summer.Elliot Anderson has joined Manchester City, Sandro Tonali has signed for Tottenham and Morgan Rogers is now a Chelsea player.But the biggest deal is Bradley Barcola’s £123million switch to Liverpool from Paris Saint-Germain.However, time will feel like it’s quickly running out for all clubs to get their late deals done as the deadline gets closer…When does the transfer window shut?The transfer deadline in England is set for today – Tuesday, September 1.For the last two windows, the closing time was set for 7pm, but the time will now return to its original later deadline.It means the summer window closes at 11pm tonight.Clubs can submit deal sheets before the deadline to give themselves a two-hour grace period to complete transfers.This deadline is in place for the Premier League and EFL.England star Anderson has joined Man City for a record-breaking feeGettyIn the WSL, the window closes at 11pm on Thursday, September 3.And that’s the same day as the Scottish Premiership, but in Scotland, the deadline is going to be set for 5pm rather than 11pm.You can follow all the deadline day mayhem on talkSPORT or in talkSPORT.com’s dedicated live transfer news blog.Listen talkSPORT through the website or find us on DAB digital radio through your smart speaker and on 1089 or 1053 AM.Download and listen to all our live commentaries via the talkSPORT app, whilst talkSPORT is also available to watch on Samsung TV Plus.Subscribe to the talkSPORT YouTube channel for news, views and analysis plus our regular goals show and for more, follow us on talkSPORT Facebook and talkSPORT on X.For the latest odds and bet boosts for every big event, visit talkSPORT BET.When is the deadline across Europe?For LaLiga clubs, their summer window shuts at a similar time to in England, with the deadline set for September 1 at 10:59pm.In Italy and Serie A, clubs have until 8pm on the same day.As for the Bundesliga, their deadline is Monday, August 31 at 7pm.Top 10 most expensive tranfers so far this summer1) Bradley Barcola (Paris Saint-Germain – Liverpool) – £123m2) Morgan Rogers (Aston Villa to Chelsea) – £117m3) Elliot Anderson (Nottingham Forest to Manchester City) – £116m4) Sandro Tonali (Newcastle to Tottenham) – £100m5) Ayyoub Bouaddi (Lille – Manchester City) – £86m6) Mateus Fernandes (West Ham to Tottenham) – £85m7) Savinho [Man City – Tottenham] £85m8) Bruno Guimaraes (Newcastle to Arsenal) – £75m9) Carlos Baleba [Brighton – Man Utd] £70m10) Nicolas Jackson [Chelsea – Aston Villa] £65mWhen does the winter transfer window open?Once the summer deadline shuts, clubs will not be able to do any more business until the winter window opens.In England, transfers will be possible again from January 1, 2027.The window will run for a month, closing again on February 1 at 11pm.Meanwhile, in the WSL, the winter window will open on January 4 and close exactly a month later on February 4.And in Scotland, their window will open on January 5, closing at 5pm on February 4.