Which country gives the most to charity?

Volunteers serve free Thanksgiving meals at the Center of Hope Community Church in Oakland, Calif., in this Nov. 27, 2013 photo.
Getty Images
Volunteers serve free Thanksgiving meals at the Center of Hope Community Church in Oakland, Calif., in this Nov. 27, 2013 photo.

Americans' generosity bodes well for charities heading into the holiday giving season, but there's still room for improvement.

The United States scored top marks in the Charities Aid Foundation's World Giving Index, released Tuesday. Not only did the U.S. share an overall first-place rank with Myanmar (yes, Myanmar), it was also the only country of the 135 assessed to rank among the top 10 in all three giving categories: helping a stranger (1st), donating money (9th) and volunteering time (a tie for 5th). The overall U.S. score was 64 percent, up from 61 percent last year.

"It's easy to discount the fact that we're No. 1, because we expect to be," said Ted Hart, chief executive officer of Charities Aid Foundation-America. "This is a story of Americans' not sitting on our laurels. We're very active givers of our time, our money and our resources."

Read More Top 10 states for charitable giving


The growth is particularly encouraging given declines in philanthropy seen after the recession, Hart said. "It's a typically American thing when you see someone in need to think, I can help my neighbor," he said. "We see ourselves having the capacity to make a difference."

That doesn't mean your charitable endeavors are any less important this holiday season. Scores show there's still room for improvement. Just 44 percent of U.S. respondents said they had recently volunteered time, while 68 percent had donated money and 79 percent helped a stranger. To compare, in Myanmar, 91 percent of respondents had donated money, giving the country top rank in that category. Turkmenistan had the most volunteers, at 53 percent.

Read MoreAre you giving too much to charity?

To give more effectively, financial advisors recommend developing an annual charitable plan. With so many "asks" coming in throughout the year, setting priorities early ensures there's room in the budget for giving to the causes you want to prioritize while meeting other financial goals.

It also helps to research nonprofits through a resource such as the Better Business Bureau's Wise Giving Alliance, GuideStar.org or CharityNavigator.org. According to a recent survey from the Wise Giving Alliance, 14 percent of givers rely on the name recognition of the charity as a measure of trustworthiness. Looking into a group's finances, project effectiveness and governance narrows the field.

Consumers have other opportunities to give thoughtfully and strategically, said Hart, including gifting appreciated stock to avoid capital gains taxes. Donor-advised funds, which allow consumers to take a tax deduction now and make charitable gifts at a later point, are another option to navigate the challenges of giving during a busy holiday season.

If the giving season motivates you to volunteer, think outside the box to find opportunities, said Shari Tishman, a spokeswoman for VolunteerMatch.org. The ones consumers often think of this time of year — soup kitchens, food pantries and the like — "get inundated this time of year, and are volunteering deserts the rest of the year," she said.

Read MoreHow much of your donation makes it to charity?

For more regular opportunities, look into so-called virtual volunteering. These projects, such as helping promote campaigns online or preparing care packages for deployed soldiers, can be done from anywhere and on your own time, said Tishman.

"Volunteering can be something that fits into your day-to-day life," she said. "There are so many great ways to help where you don't have to show up at a certain place at a certain time."