People in Wales who are on low pay and who are told to self-isolate will see their payments increase from £500 to £750.
The cash is to support those who cannot work from home, as well as parents and carers with children who have tested positive and are self-isolating.
The increase will take effect from this Saturday, 7 August.
Also from that date, fully vaccinated adults will no longer be required to self-isolate after close contact with a positive Covid case. People will be told to isolate by the NHS Wales Test Trace Protect service if they have tested positive, have symptoms of coronavirus or are a close contact of someone testing positive and have not been fully vaccinated.
Finance and Local Government Minister Rebecca Evans said more than 14,500 support payments had been made since last November. She added:
“These payments are vital and the increase to £750 will provide further reassurance to anyone who has been told to isolate by TTP but may experience financial hardship as a result of having to stay at home. Further advice has been given to local authorities on how they can provide practical help and support to applicants as they apply for the payment.”
People can apply for the support payment online, providing evidence they meet the eligibility criteria.
Ms Evans confirmed the increase in the payment will be reviewed in three months, but stressed the self-isolation payment scheme has been fully extended until March 2022.