A tax regime where the tax service does the math for you — no accountant, almost no reporting.
Alfa-Bank was in the first wave of banks to launch it, in 2022 — and the first major bank to offer the switch in one window. I designed it from scratch.
The hard part was the tax data. I took the official tax forms apart field by field and rebuilt them into screens a person could read — but in a shape the tax service could accept and read back without ambiguity.
With engineering we mapped the operation and category reference books, how transactions tie to the tax base, and the single-tax-account balance logic — inside the limits of what front and back could do.

I got the logic out of our lawyer: asking her to explain it like I was five, until I actually understood it. Only then I could make it simple for the client.

Explains the regime in plain words: who it fits, what the single tax account is, how everything gets counted. Signing up takes two steps — fill in a consent form and wait for the tax service to reply.

One place for everything: the state of the regime, a tax calendar with what's due and what's overdue, and an operation history you can retag by hand.

The bank only touches a client's tax data with their consent. I designed a permissions model where the client decides what the bank can access, and can see at a glance what's on and what's off.

The heart of the regime — how every operation gets tagged for tax. Instead of dry codes from the tax handbook, I gave people plain markers: you see what lands in the tax base and why, and can fix the tagging by hand when an operation is unusual.

The income-tax and calculated-tax sections show what's due now and what hasn't hit the single payment yet. Tax adds up across quarters, debt included.
Honest framing: I designed the one-window onboarding right at the start, when the whole country had ~250 AUSN users across four pilot regions. The market numbers here are today's — the product I helped launch early grew to hundreds of thousands after I'd moved on to other teams.