Tax planning: typically the income tax is the single largest expense in a household.

Traditionally, teachers' pay is the biggest single expense paid by taxpayers.

Most cost analysis studies of the Space Shuttle have shown that workforce is by far the single greatest expense.

The sales force, Pfizer's single biggest expense, is in many ways the core of its business.

Indeed, for a typical apartment building, taxes are the biggest single expense, often a fourth of the operating budget.

Paying for television broadcasts seen in 145 countries has become the ministry's largest single expense.

Political commericials are the single largest expense of many campaigns.

So far, the campaigns have saved their money for television, their single biggest expense.

His largest single expense was salaries, which came to $17,659.80 weekly.

The largest single expense that political campaigns face nowadays is TV advertising.