* U.S. stocks end lower

* Powell testimony due this week

* Treasury yields slip

NEW YORK, June 20 (Reuters) - Global stock indexes fell and the dollar index inched up on Tuesday as investors weighed the U.S. interest rate outlook ahead of Federal Reserve Chair Jerome Powell's congressional testimony.

U.S. Treasury yields eased.

Adding to uncertainty over the rate outook, a report showed groundbreaking on U.S. single-family homebuilding projects surged in May by the most in more than three decades and permits for future construction also rose.

After lifting rates by 5 percentage points since March 2022, the Fed this month took a breather to assess the effects of its actions. Rate hikes could resume next month, however, with inflation still too high.

Powell's testimony before the U.S. House of Representatives' Financial Affairs Committee is due Wednesday.

"If Mr. Powell remains adamant that the central bank is not done raising interest rates to crush inflation, that could help the dollar stabilize after the big declines we saw last week," said Joe Manimbo, senior market analyst at Convera.

Against a basket of six major currencies, the dollar was up 0.06% on the day.

The Australian dollar fell after its latest central bank meeting minutes showed that keeping interest rates unchanged had been under consideration.

Investors also were digesting China's move to cut its benchmark loan prime rates (LPR) for the first time in 10 months on Tuesday. Among Beijing's moves to stimulate the country's slowing recovery, the People's Bank of China lowered the medium-term lending facility rate on Thursday.

Energy led declines among the major S&P 500 sectors, with oil prices falling on a mixed demand outlook from China.

On Wall Street, the Dow

fell 245.25 points, or 0.72%,

to

34,053.87

; the S&P 500

lost 20.88 points, or 0.47%,

at

4,388.71

; and the Nasdaq Composite

dropped 22.28 points, or 0.16%,

to

13,667.29

.

U.S. markets were closed for a public holiday on Monday.

The pan-European STOXX 600 index

lost 0.59

% and MSCI's gauge of stocks across the globe

shed 0.55

%.

U.S. Treasury yields fell, in line with declines in Europe, as investors priced in expectations that the Fed may be near the end of its rate-hiking cycle. The yield on 10-year Treasury notes was down 4.4 (bps) at 3.724%.

Brent futures for August delivery

fell 19 cents

to settle at $75.90 a barrel, while U.S. West Texas Intermediate (WTI) crude for July delivery fell $1.28 to $70.50.

Spot gold

dropped 0.7

% to $

1,936.06

an ounce.

(Reporting by Caroline Valetkevitch; additional reporting by Saqib Iqbal Ahmed in New York, Joice Alves in London, Selena Li in Hong Kong and Anisha Sircar in Bengaluru; editing by Susan Fenton, Jason Neely and Richard Chang)