eMarketer bases its analysis on various elements related to ad spending, including macro-level economic conditions, historical trends, estimates from other research firms, and consumer internet usage trends.
Asia-Pacific and Latin America are expected to be the fastest-growing regions throughout the forecast period, with spending rising at about double the worldwide rate. The biggest driver of growth is China, which eMarketer expects will overtake Japan's total ad spend next year for the first time, making China the world's second-largest country in terms of ad spend (after the US).
This year, China's ad spend is expected to reach US$46.3 billion and Japan's to grow to US$47.8 billion. Next year, the research firm predicts that China's ad spend will reach nearly US$53 billion, compared with Japan's ad spend of nearly US$50 billion.
eMarketer also predicts that online ad spend growth worldwide will reach 21.3 per cent this year to total US$107 billion, slightly faster than last year's rate of 21.1 per cent.
China has a big part to play in this growth as well as its rapid growth, set to reach US$7.36 billion this year, will propel Asia-Pacific past Western Europe to become the second region in the world for online ad spend in 2013. In 2014, this growth will make China the second-largest online ad market in the world, as it surpasses the UK and Japan, and remains behind only the US, said eMarketer.
eMarketer's forecast is markedly more optimistic than advertisers surveyed in Warc's latest Consensus Ad Forecast, which downgraded growth estimates for this year in 11 of 13 key global markets. At the worldwide level, Warc expects advertising expenditure to increase by 4.4 per cent in 2012 and 4.9 per cent in 2013, softening from April's forecast of 5.3 per cent and 5.4 per cent, respectively.