Speaking during a public forum in Nanyuki, Muriithi said national development does not have to rely on punitive tax policies.
Instead, he explained that the government can raise enough revenue by widening the tax base and encouraging more Kenyans to voluntarily comply with tax obligations.
According to Muriithi, millions of Kenyans are engaged in economic activities but remain outside the tax system.
Bringing more people and businesses into the tax net, he said, would ease pressure on those who already pay taxes while increasing government revenue.
“The vision of becoming a first-world country is achievable if we focus on expanding the tax base rather than squeezing the same taxpayers over and over,” Muriithi said.
He also took aim at critics who have dismissed President Ruto’s development agenda.
Muriithi accused them of spending too much time attacking the President instead of offering alternative ideas that can inspire hope among Kenyans.
“To those who disagree with him, what is your own compelling vision? It is not enough to simply criticise a vision because it is not presented by a leader from your formation,” he said.
Muriithi warned that constantly tearing down national goals without proposing solutions only creates negativity and discourages progress.
He urged leaders across the political divide to engage in constructive debate and focus on what can be done to improve the lives of ordinary citizens.
On the issue of corruption, the KRA chair acknowledged that it remains a major challenge that can slow down development efforts.
However, he stressed that corruption alone cannot stop a determined country from achieving transformation.
He said strong institutions, better enforcement of laws and a culture of integrity can gradually reduce corruption and allow development plans to succeed.
According to Muriithi, Kenyans should not use corruption as an excuse to abandon ambitious goals.