Transparency International Solomon Islands says it's inappropriate for MPs to funnel funds intended for churches.
Some MPs are asking the government for so called tithe money worth 13 000 US dollars .
Transparency's chair, Bob Pollard, says some MPs forward these tithe funds to the churches, others keep them for themselves, or use them to buy votes.
Mr Pollard believes some backbenchers are behind the call, which he labels unacceptable.
"Fundamentally, it's a problem that MPs believe that they should be a funnel of funds for their constituents. And this is a key problem that we have. It's not the role of MPs to be funneller of funds. This is a continuation of the slash funds funded by Taiwan that we have."
Bob Pollard says the funneling of funds should stop.