In searching the net I found some results on a rival forum. Without mentioning that rival forum (no sources were given) I have found these stats. Hence I have copied everything this "well-informed" person wrote and pasted it below - which hopefully isn't plagiarism.

1] Ferrari: €440m (Same budget since 2008, 2012 will see it go down to €300m)
2] McLaren: €320m (Down €5m on 2010, 2012 will see it go down to €285m)
3] Red Bull: €285m (up €40m on 2010, will stay same for 2012)
4] Mercedes: €225m (up €40m on 2010, will stay same for 2012)
5] Renault: €185m (down €40m on 2010, uncertain for 2012)
6] Williams: €140m (down €40m on 2010, will stay same for 2012)
7] Force India: €135m (up €10m on 2010, will drop to €130m for 2012)
8] Sauber: €125m (up from €75m in 2010, will stay same in 2012)
=] Toro Rosso: €125m (up €15m from 2010, will increase to €140m in 2012)
10] Team Lotus: €120m (€20m up on 2010, however 2012 will see this riase to a minimum of €150m)
11] Virgin: €66m (up from €45m in 2010, this is expected to rise to €85m for 2012)
12] Hispania: €55m (up from a €38.6m budget, expected to rise to a budget of arround €65m to €70m in 2012)
Staff are also an important resource in determining the resourcefulness of an F1 team:
1] Ferrari: 900-950 staff (same since 2007/2008, reducing to 450-500 from 2012 onward)
2] McLaren: 750-785 staff (same since 2007/2008, reducing to 450 from 2012)
3] Red Bull: 450-485 (Same since 2008, but will remain roughly the same for 2012)
4] Renault: 400-420 (down from 550 in 2008/2009, will remain unchanged in 2012)
5] Williams: 380-410 (remains unchanged since arround 2008, however this could drop to arround 350 in 2012)
6] Mercedes: 350-380 (Honda was 750 in 2008, Brawn was 450 in 2009, last year they futher reduced capasity for streamlining operation, now putting a little fat back on, so id estimate 380-400 in 2012)
7] Sauber; 240-270 (BMW Ssauber in 2008/2009 was up at 650, last year they reduced to 225, id recon now they would be looking at 250 as the optimum level)
8] Toro Rosso: 225-235 (increase from the highs of 2008, whitch they had 165 employees, however they are recruting for 2012 to go to 250 employees with arround 45-75 based at Red Bull Technology in Milton Keynes, the rest are at Faenza)
9] Force India: 175-190 (have lost arround 40-50 people to team Team Lotus in the past 18 months)
10] Team Lotus: 185 (Have said they will have 225-240 in 2012 for optimal levels)
11] Hispania: 135 (arround 60-70 are Hispania employees directly, the rest are consultancy or rented from Kolles or Toyota Motorsport GmbH or other consultancy firms or freelance. Recruting at present, id recon that theyd want arround 150-185 for optimal levels)
12] Virgin: 85-120 (Wirth said there was 120 employees in total, with Wirth Research employing roughly 45 guys and Manor Motorsport employing 55 guys, the rest are all consultants or embedded engineers for suppliers. Id recon its now arround 100 with only about 15 Wirth Research guys in the team from now onward, recruting at present, looking for arround 150-185 optimum)
13] Toyota: 85-115 (yes they have left F1, but still have people in Cologne working on F1 projects in terms of the TF109-01 Pirelli car that is being used for tyre testing and for other teams for consultancy work. Back in 2009 they had arround 350-400 working in F1, most of whitch are at Team Lotus/Williams/Ferrari/Hispania now)