From [broken link removed] "Taxation of married couples"
Standard rate cut-off point
The Standard Rate Cut-Off Point for married couples for 2006 is €41,000 subject to an increase of up to €23,000 where both spouses are working. The increase is limited to the lower of €23,000 or the amount of the income of the spouse with the smaller income. This increase is not transferable between spouses. The increase in the Standard Rate Cut-Off Point in not allowable where a couple are claiming the
Home Carer’s Tax Credit. However, if the increased Standard Rate Cut-Off Point is more beneficial, you can claim the increased Standard Rate Cut-Off Point instead of the Home Carer’s Tax Credit. In practice your Regional Revenue Office will grant you whichever is the more beneficial.[broken link removed] 'Home Carer's Tax Credit' gives further information and examples to help you calculate which is the most beneficial.
It is very important that you have the correct tax credits and Standard Rate Cut-Off Point otherwise you will not pay the correct amount of tax.
Example:
Helen is the assessable spouse and she earns €43,000 in 2006. Her husband Jim has a Social Welfare pension of €4,500.
Their income is taxable as follows:
Helen €41,000 @ 20%
€2,000 @ 42%
Jim €4500 @20%