The number of business trips in Germany in 2007 rose by 5.6% compared to 2006 while spend for the year increased by 2.7% to €48.7bn
But the new VDR Business Travel Report Germany 2008 also showed that the cost of a business travel trip per day dropped by 7.4% from €148 in 2006 to €137 last year.
It showed travel managers were "doing a good job" the report said.
VDR, the German travel managers' association carried out the annual report, its sixth, with management and technology consultants BearingPoint.
The survey found that German companies were also optimistic for the future, despite a possible slowdown in the European economy.
The bulk of respondents said they expected the number of trips this year to be the same or increase compared with 2007.
For example, 88% said they thought the number of overnight stays at hotels would stay the same or increase while 86% said the same about air travel.
Only 5% and 6% respectively thought that hotel stays and air travel would drop.
The study said the trend towards tighter control of costs was continuing.
The number of trips had increased by 14% since 2004. But in that time, spend had only risen by 11%. It meant that German companies had found savings of €1bn on trips while travelling more.
It said the average cost of a trip in 2005 was €335, compared to €325 in 2006 and €316 last year.
The report concluded: "The travel managers have done a good job: they have not let themselves be swayed by the positive economic mood (in 2007) into neglecting cost consciousness.
"Especially in times when market prices are on the rise, travel management and the use of specific tools for planning, booking trips and controlling expenses really pay off."