Oversea-Chinese Banking Corporation Limited's$OVERSEA-CHINESE BANKING CORP(O39.SI)$ dividend will be increasing to S$0.28 on 20th of May. This makes the dividend yield about the same as the industry average at 4.5%. We like a dividend to be consistent over the long term, so checking whether it is sustainable is important. Before making this announcement, Oversea-Chinese Banking was earning enough to cover the dividend, but it wasn't generating any free cash flows. In general, we consider cash flow to be more important than earnings, so we would be cautious about relying on the sustainability of this dividend. Over the next year, EPS is forecast to expand by 12.4%. If the dividend continues along recent trends, we estimate the payout ratio will be 4