The rouble weakened in volatile Moscow trade on Monday as Russia looked set for its first sovereign default in decades after a payment deadline expired before some bondholders had received overdue interest.

The grace period on $100 million interest payments due on May 27 expired on Sunday. The Kremlin says there are no grounds for Russia to default but that sanctions have hampered its ability to send money to bondholders, accusing the West of trying to drive it into an artificial default.

At 0728 GMT, the rouble was 0.5% weaker against the dollar at 53.68, at one point shedding around 2% and touching its weakest since June 21 of 54.4975.

It had lost 0.6% to trade at 56.43 versus the euro .

The rouble, which has become by far the world's best-performing https://emea1.apps.cp.thomsonreuters.com/Apps/NewsServices/mediaProxy?apiKey=6d416f26-7b24-4f31-beb6-1b5aa0f3fafb&url=http%3A%2F%2Ffingfx.thomsonreuters.com%2Fgfx%2Frngs%2FGLOBAL-CURRENCIES-PERFORMANCE%2F0100301V041%2Findex.html currency this year, has been driven by Russia's high proceeds from commodity exports, a drop in imports and a ban on households withdrawing foreign currency savings.

The strong rouble hammers the incomes of export-focused companies and could weigh on the economy as it tips into recession following harsh sanctions over what Moscow calls a "special military operation" in Ukraine.

Capital controls have buttressed the rouble for months, while this week's peak of a month-end tax period that sees exporting companies convert dollar and euro revenue into roubles may add short-term support.

There was no increase in currency sales by exporters last week, said Alor Broker in a note, meaning they could have left the process of forex conversion until the last minute, which would see the rouble strengthen.

However, Alor said exporters may have already stockpiled the necessary rouble amounts.

On the bond market, yields on 10-year benchmark OFZ bonds , which move inversely with their prices, fell to 8.68%, their lowest since early 2022.

Russian stock indexes were mixed.

The dollar-denominated RTS index was down 0.3% to 1,410.4 points. The rouble-based MOEX Russian index was 0.5% higher at 2,404.3 points.

For Russian equities guide see

For Russian treasury bonds see

(Reporting by Reuters; editing by Barbara Lewis)


Reuters