Why Clients Keep Paying the Wrong Tax, and Why the Firm Always Cleans It Up
Firms keep describing the same loop on prospect calls. Clients pay the wrong year, wrong entity, twice, or not at all. Then the partner emails the state to fix it. The instructional email is no longer a deliverable. It is a tax on the firm itself.
By Solon Angel
Why do clients keep paying the wrong tax even when you hand them a clean voucher?
That's the question I keep coming back to after a stretch of calls with firms who have stopped pretending the last mile is solved. They send the instruction. The client tries. Something still goes sideways. Then the firm gets pulled back in to clean it up.
One partner at a southeast firm with a heavily multi-state book told me clients routinely pay using the wrong EIN when they have multiple entities. He then has to coordinate directly with state departments of revenue to unwind the wrong-entity payment, arrange the refund, and walk the client through paying again to the right place. The client thinks they did the work. The firm did the work twice.
A wealth-focused firm serving high-net-worth families described a different version of the same loop. Clients mailing a paper check and also paying online for the same obligation. One staffer told me they were personally handling 183 clients in a single quarter with roughly twice that number of underlying payments, and the list keeps getting longer. Duplicates slip through because no human at that volume can catch them in time.
A midwest mid-market firm gave me a quieter failure mode. A client missed a deadline because they could not finish setting up a state portal account in time. Instructions were sent. The client tried. The portal is unforgiving close to the wire. The firm called its own handoff process 'terrible,' and that was the word they used, not me.
The most uncomfortable one came from a multi-family-office shop handling six and seven figure quarterly estimates. Clients react emotionally when large amounts they had previously approved show up as withdrawals months later. The firm digs through email chains to prove authorization. In one case the same payment got made twice because there was no central record of who approved what. At those dollar amounts a duplicate is not an operational problem, it is a client-trust event.
Here is what I want firms to see clearly. None of these failures are client stupidity. They are failures of a handoff model that pretends the last step is simple when it isn't.
The infrastructure these clients are touching is genuinely broken. The CPA Journal published a piece in May making the point that the IRS Individual Master File still runs on 1960s-era code and the CADE replacement is now not expected before 2030. Payments post slowly. Reject messages are unclear. State portals are inconsistent in ways no instruction email can paper over. When the client is the one logging in, the client absorbs all of that complexity, and they are not equipped for it.
At the same time client expectations are moving the other direction. Wolters Kluwer's 2026 outlook puts rising client demands at the top of the challenge list, right next to OBBBA complexity. The Thomson Reuters Institute reports 94% of US firms now offer advisory services and 63% consider advisory core, up from 52% a year ago. Firms with quarterly or more frequent touchpoints score higher on every satisfaction measure they tracked. That is why more firms are absorbing the operational work they used to push back. The handoff is shrinking because clients want it to shrink.
So here is the teacher moment. If you are still telling a client to go pay this, you are not delegating. You are exporting the hardest part of the job to the least equipped person in the chain, on the slowest infrastructure in American finance, with the highest emotional stakes when something goes wrong. And then you are paying for the cleanup with partner time.
The firms I respect most have stopped pretending that the instructional email is a deliverable. They have started treating the payment itself as part of the engagement. Not because they want to do more work, but because doing less of this work means doing it under their own control.
I will not pretend to firms that the last mile is the client's problem. It hasn't been for years. The sooner we say that out loud, the sooner we stop sending vouchers into the void and calling that service.
Solon Angel is the Co-Founder and CEO of Remitian, the tax payment infrastructure platform for accounting firms, banks, and their clients.
