Omnicom (OMC) 8-K Omnicom Prices Offering of $500 Million Senior Notes

EXHIBIT 12.1

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

(In millions, except ratios)

(Unaudited)

	For the Six Months Ended June 30, 2012
Earnings:
Income before income taxes	$   804.9
Add: Dividends from affiliates	6.3
Fixed charges	151.6
Total earnings	$   962.8
Fixed charges:
Interest expense(a)	$     82.5
Rent expense interest factor(b)	69.1
Total fixed charges	$   151.6
Ratio of earnings to fixed charges	6.35x

(a) Interest expense includes interest on third-party indebtedness.

(b) The rent expense interest factor reflects an appropriate portion (one-third) of rent expense representative of interest.