I recently came across this list on Forbes on the largest 25 tax payers. Forbes does a bit of analysis on each of them. It is probably worth your time to jump over, but I thought I would give the highlights here:

 

Rank of tax expense

Company

Symbol

Effective Tax Rate

1 ExxonMobil XOM 39%
2 Chevron Corporation CVX 43%
3 Apple Inc. AAPL 25%
4 Wells Fargo & Co. WFC 31.2%
5 JP Morgan Chase & Co. JPM 26%
6 Wal-Mart Stores WMT 31%
7 ConocoPhillips COP 51.5%
8 Berkshire Hathaway Inc. BRK 28%
9 IBM IBM 24%
10 Microsoft Corporation MSFT 22.8%
11 Philip Morris International Inc. PM 29.5%
12 Goldman Sachs GS 33%
14 Comcast Corporation CMCS 32%
14 The Procter & Gamble Co. PG 23.5%
15 Johnson & Johnson JNJ 23.7%
16 Intel Corporation INTC 23.6%
17 Occidental Petroleum Corp. OXY 42%
18 UnitedHealth Group UHG 35.9%
19 The Walt Disney Company DIS 32.7%
20 AT&T T 27.8%
21 Oracle ORCL 21.4%
22 The Coca-Cola Company KO 23.1%
23 The Home Depot Inc. HD 37.2%
24 McDonald’s MCD 32.4%
25 Google GOOG 19.4%