As the finance ministers from four East African countries prepare to announce their spending plans for the next year, the problem of how to raise more money for government spending will be on their minds.
Kenya, Uganda, Tanzania and Rwanda always announce their budgets on the same day at the same time each year.
Kenya is by far the biggest spender in the region. The government's estimated budget of $30.2bn (£23.8bn) is larger that all of the other countries in the region combined.
But it isn't raising enough money from taxation.
Last December, the government's budget deficit was $600m.
So how can Finance Minister Henry Rotich close the gap?
The Kenya Revenue Authority (KRA) "needs to widen the tax base", senior tax partner at Ernst & Young Francis Kamau has told the BBC.
In other words more people need to pay tax.
But "we do not anticipate that the KRA will be able to seal the deficits soon unless drastic measures are taken and effectively implemented" he added.
One thing that could be targeted is the money wasted through corruption.
But to raise extra money, Mr Rotich could be looking at how to tax the growing e-commerce sector effectively as well as more taxes on the gaming and betting industries.