A bishop has complained that parishioners' weekly donations have become more stingy at £2.35, which is "less than the price of a cappuccino".
The Catholic Bishop of Portsmouth, Philip Egan, criticised churchgoers' meagre offerings in a four-page pastoral letter called "The Future of the Diocese".
Over the next five years, the diocese is due to close a staggering 63 of its parishes.
It will reduce the number from 87 to 24 "pastoral areas" each containing multiple churches.
Bishop Egan revealed the plans in a four-page pastoral letter titled The Future of the Diocese (10 year mission strategy), from October 16.
In it he expressed sadness that weekly churchgoers now donate just £2.35, or less than a cup of coffee.
A huge cappuccino with normal milk at Starbucks would cost approximately £3.
He said: "Given that across the diocese the average donation is £2.35 a week - less than a cappuccino - how can we encourage real stewardship, responsibility and tithing?
"And how can our parish witness to the Gospel in our area (sic)?
"I always remember the challenging question: "If your parish closed tomorrow, would anyone who is not a member care?"
The worldwide Catholic Church is estimated to be worth around £25 billion.
In the UK, its wealth peaked at £15 million between 2010 and 2016, according to Statista - although some experts say the Vatican's wealth is impossible to measure because many of its assets are "priceless".
The religion is regarded as the wealthiest in the world, and it comes amidst a cost of living crisis which is squeezing people's finances.
The 67-year-old Bishop said that while the church was founded on Jesus, it was also made up of humans who are "fallible, prone to error and sin".
He said that for every person who converts to Catholicism, six leave.
The Bishop added: "Whilst Jesus gave the gift of infallibility to His Church, that she would never err in her teachings on faith and morals, He never promised the Church would always last in any particular place."
The Bishop celebrated 10 years in the post last month, and said the pandemic had its "challenges" but also laid into the "toxic effects of an affluent, secular culture".
He wrote: "The numbers have now become so challenging that we have to act more radically.
"Doing nothing or 'business as usual,' is not an option, otherwise many, many churches across our Diocese will close down."
He said churchgoers should be "more holy", and should keep Sunday as a special, family day., and forming a prayer group as part of his You Will be My Witnesses plan to save the church over the next ten years.
The Bishop warned: "Structural change will fail without a deep spiritual change in ourselves and in our communities.
"We will not be saved by structures: change the structures and all will be well.
"Sadly, it won't. What we all need now is to draw closer to the Sacred Heart of Christ."
The Catholic Diocese of Portsmouth has been contacted for comment.
