The first £9,440 of your income for 2013/14 is tax free. The next £32,010 is taxed at 20%. The next £117,990 is taxed at 40% and income in excess of £150,000 is taxed at 45%.
Take a look here
for information on dividends and tax. Dividends are treated as basic rate tax paid even though they only carry a non-repayable 10% tax credit.
If your income is more than £41,450 in 2013/14, that part of any dividend which takes your income above £41,450 but under £150,000, will be taxed at 32.5% less the 10% tax credit. So, if all your £60,000 dividend which grosses up to £66,666 was above the £41,450 figure, you would have further tax to pay of £14,999.85 (22.5%). Clearly, that is not the case as you say your salary is low so you will have some of the basic rate band of £32,010 available and any part of your personal allowance not covered by salary to use against dividends. The same will apply to your wife unless she is already a 40% taxpayer before accounting for dividends.
The best way to avoid higher rate tax on dividends is to spread them over several tax years.
I hope this helps but let me know if you have any further questions.