Russia has a 12 percent flat tax. Those evil Russians! Putin is such a tyrant!
That's a misleading statement. Russia may have a flat income tax rate, but they have enormous payroll taxes that drive workers and employers to engage in tax-avoidance schemes that date back to the Soviet era. To avoid paying these payroll taxes, employers will compensate their workers by paying non-payroll forms of compensation such as buying cars for them, paying for apartments, etc.
The Russian Federation has a general VAT rate of 20%.
There’s also Unified Social Tax (35.65) that employers must pay.
https://waytorussia.net/business/tax.html
The Russian Federation also gets a lot of revenue from oil/natural gas at the production and export phases.