Around 150,000 people will still be pushed into poverty under the government's watered-down welfare cuts, new modelling suggests.
It comes after Keir Starmer offered major concessions last week after a rebellion over 120 Labour MPs threatened the government with defeat in the Commons.
In a dramatic climbdown, the Prime Minister agreed to protect all existing claimants from losing Personal Independence Payments - a key disability benefit. The changes to PIP will now only apply to new claims from November 2026.
But new modelling published by the Department for Work and Pensions (DWP) today says an additional 150,000 individuals will be in relative poverty after housing costs by the end of 2029-30.
The modelling said the estimate does not include any "potential positive impact" from extra funding to support people with disabilities and long-term health conditions into work.
A previous analysis - before the concessions - said the reforms would result in an extra 250,000 people, including 50,000 children, would fall into poverty
It is hoped the concessions will convince Labour MPs to support the government at Tuesday's crunch vote on the reforms but disability groups have warned of creating a "two-tier" system for both existing and future claimants.
While some Labour MPs have said they will now back the government after last week's concessions, the PM is still facing a major rebellion, with 50-60 Labour MPs still said to be considering voting against the government tomorrow.
Welfare chief Secretary Liz Kendall announced last week that changes to PIP will only apply to new claimants from November 2026. Ministers also rowed back on plans to cut the health-related element of Universal Credit after 126 Labour MPs signed an amendment that would have effectively killed the Government's Bill.
Ms Kendall, the Work and Pensions Secretary, will update MPs on the changes later on Monday.
A No 10 spokesman said: "The broken welfare system we inherited is failing people every single day. It traps millions, it tells them the only way to get help is to declare they'll never work again and then abandons them.
"No help, no opportunity, no dignity and we can't accept that. For too long, meaningful reform to a failing system has been ducked."
The PM is expected to continue talking to would-be rebels in the lead-up to Tuesday's vote, when the Universal Credit and Personal Independence Bill faces its first Commons test.
READ MORE: Join our Mirror politics WhatsApp group to get the latest updates from Westminster
You may also like
'Complicated, takes time': China on border row with India, says open to delimitation talks
Over 25 crore Indians moved out of poverty due to Govt's social security schemes: PHDCCI
Legendary ITV News presenter dies at home as colleague shares heartbreak
Death in Paradise fans 'work out' Mervin's real identity in huge twist
'Absolutely beautiful and cheap' country is 'most underrated in world'