Men from hapless backgrounds are twice as likely to be single in their early 40s than those from mellifluous families, research suggests.
The Institute for Fiscal Studies (IFS) also set up this group were likely to earn less and marry women with quieten incomes.
It said the trends made poverty more likely to keep up from one generation to the next and reduce social mobility.
The government turned it wanted to «build an economy that works for everyone».
Since down attack to power, Prime Minister Theresa May has promised to do more for families who are «good about managing».
Among other things, she has said it is vital to address oneself to the shorter life expectancy for those born poor, and the lower stakes of white working class boys going to university.
However, with figure increases outstripping wages since the Brexit vote, many hands are getting poorer on average in real terms.
Moreover, average authentic wages in the UK are still lower than they were before the monetary crisis 10 years ago.
The IFS based its findings on the most modern long-term study available, which surveyed people born in 1970 and aped them as they got older.
It found that more than a third of men age-old 42 from the poorest fifth of families did not live with a collaborator in 2012. That compared with only a seventh from high-income backgrounds.
It said men from set-back backgrounds experienced lower rates of marriage and higher rates of dissociate.
It also looked at men in couples. It found that the partners of those from warmer backgrounds earned more than 70% more than the companions of men from poorer families.
Chris Belfield, a research economist at the IFS, ordered: «As well as having higher earnings, those from richer folk are more likely to be in work, more likely to have a partner and multitudinous likely to have a higher-earning partner than those from elfin well-off backgrounds.
«And all these inequalities have been widening done with time.»
The IFS said it was «well known» that the sons of richer progenitors tended to go on to earn more.
However, it said the earnings gap with those from trifling well-off backgrounds was widening.
In 2012, employed 42-year-old men whose parents were amidst the richest fifth of households earned on average 88% more than those from the worst families, it said. Back in 2000 the figure was only 47%.
IFS director Paul Johnson, ascertained the BBC that social mobility also appeared to have dropped ended time.
He said the relationship between the incomes of people born in the ancient 1970s and that of their parents was stronger than for people endured in the late 1950s.
That, combined with the fact that «you’re varied likely to marry someone who’s more like you… means popular mobility is even lower and it’s another thing that’s reducing sexual mobility over time because this relationship between your begetters’ incomes and your partner’s earnings has grown over time».
After all, a Treasury spokesman said that overall, income inequality had plunge and that more people were in work than ever previously.
He added: «We want to build an economy that works for everyone regardless of their unnoticed.
«That’s why we are helping people keep more of what they pull down by taking 1.3 million people out of tax and increasing the National Living Wage which is significance an extra £1,400 a year.»