It is 4:40 on a Thursday afternoon.
A tax return that everyone thought was done and ready to be sent to the client is back on the screen.
One number doesn’t tie to the accounts. You notice a missed capital allowance. The client just sent an email about another income source. Now someone needs to check whether a deduction has been treated right.
You go back to square 1. The return falls back into the queue. This probably isn’t a major tax problem and will need “just 20 minutes” to fix.
But the real issue isn’t about that here. It’s the time lost in the entire process.
- Someone has to reopen the file.
- Someone has to investigate what changed.
- Someone has to review it again.
- The partner may need to look at it for a second time.
- The client may need another email.
Rework is usually a process problem before it is a people problem
One of the most common yet recurring issues that accounting firms talk about is tax return mistakes. And their first instinct is to ask: Who made the error?
Let’s flip the question to see if there’s a better solution:
Why was the error able to travel this far through the process?
Inaccuracies can happen even when an enormous amount of reasonable care was taken. This makes it clear that even when care is taken, a lot depends on the circumstances and the complexity of the taxpayer’s affairs.
This means that a tax team cannot eliminate every human error. But what they can do is design a process that can spot even the tiniest mistakes before it becomes an expensive rework. This means that the leaders, owners, and anyone in charge of review needs to ask an important question: where do errors actually enter the workflow?
Most rework starts before the tax return does
Let’s consider a relatively ordinary client.
The tax team receives the accounts. The bookkeeping is almost complete. A few questions are still outstanding, but the filing deadline is approaching, so the return is started.
Then there are a lot of questions around this:
- Was that expense business or personal?
- Is there another bank account?
- What happened with the asset purchased during the year?
- Was the property rented for the full year?
- Has the client included all their income?
Individually, they might seem like small questions. But all of them interrupt the workflow, and a lot can go wrong then.
The preparer pauses. The client is contacted. The file waits. The answer arrives days later. The return is reopened. Something else changes as a result. And by the time the return is ready, the team has spent considerably more time on it than the original preparation should have required.
The issue may not necessarily be that the preparer made a mistake on the tax return. The problem was that the process allowed an incomplete file to enter preparation in the first place.
The real enemy is the “almost complete” file
Working on so many tax files, the teams get good at identifying work that is not ready. The complexities lie with the ones that look “almost complete”. These files pose much greater danger.
- They have the accounts.
- They have the bank statements.
- They have most of the information.
- They are sitting in the workflow.
It is the remaining 10% that contains information that determines whether the return is actually accurate. In such cases, firms end up losing an enormous amount of time. A useful starting point is to define what “ready to be prepared” really means.
That could include:
- All required client information received
- Prior-year figures reviewed
- Accounts and tax records reconciled
- Unusual transactions flagged
- Outstanding queries resolved or clearly documented
- Supporting evidence available
- Known tax-sensitive items reviewed
The objective is simple: stop using the tax preparer as the final data-gathering mechanism.
Review should not be the place where quality check begins
Many firms approach review with a second source of rework. The problem with this thought is that if the review stage is effectively the first serious quality control point, the role of the reviewer transitions into a second preparer. It is no longer about just checking the returns.
The reviewer ends up finding missing information, questioning judgments, correcting classifications, and even rebuilding parts of the file.
This creates a recurring and predictable problem: this results in the firm pays double the price for the same piece of work. A stronger process builds quality into earlier stages.
This needs to be avoided. Instead of asking a reviewer to discover every possible issue, firms can create targeted checks around the areas most likely to generate tax return errors. This could include:
- Unusual movements against the previous year
- Large changes in income or expenses
- Capital transactions
- Director or shareholder transactions
- Property income
- Losses and reliefs
- Tax-sensitive balance sheet items
- Missing or inconsistent supporting information
Your firm's own rework data is telling you what to fix
This is one of the key opportunities that firms miss. Most tax firms are already aware that rework happens. The problem is they don’t measure why.
Imagine a tax team discovers that across the last filing cycle, a large proportion of review comments came from just five recurring issues. This can be more useful information.
This changes the narrative from “be more careful” to:
- What needs to change in the process so this happens less often?
- Perhaps the client questionnaire needs to change.
- Perhaps a particular reconciliation needs to happen earlier.
- Perhaps the tax software needs a better workflow.
- Perhaps the review checklist needs one additional control.
- Perhaps a junior team member needs targeted training.
Or maybe the firm has overloaded experienced reviewers with too much work, leaving insufficient time for proper review.
The data you gather from rework, when used accurately, turns into operational intelligence.
Technology should eliminate rework, not just speed up preparation
Most tax firms often evaluate a technology based on how quickly it can help prepare a return/ But that is only half of a tool’s capability. When choosing a tool, you should also consider how much unnecessary work it prevents.
Good tax technology and accounting automations can help with data collection, automated checks, document management, workflow visibility, and identifying anomalies.
But the key challenge is that any technology can’t fix an inconsistent process. If information enters the system badly, technology can simply help the wrong information move faster. The strongest firms therefore combine technology with standardised tax workflows: clear handoffs, defined ownership, automated prompts and visible exceptions.
While the software handles the systematic side of the business, the tax professional focuses on what requires judgment.
Client communication is part of quality control
One of the most common truths about rework is streamlining client communication. A lot of it starts with how firms interact with clients. Incomplete information, late documents, and changes disclosed after preparation are realities of tax work. But firms do have a lot of control over how much disruption they create.
Instead of sending a generic request for “all relevant information”, firms can make information gathering more specific. This includes:
- What changed this year?
- Did you buy or sell property?
- Start or close a business?
- Purchase significant equipment?
- Receive income from another source?
- Take on a new investment?
- Have any unusual transactions?
Reducing rework is also about protecting senior capacity
Beyond all this, is a much bigger business issue.
Every hour a senior tax professional spends correcting preventable work is an hour they cannot spend on higher-value activity. That might mean:
- Less time for tax planning.
- Less time advising clients.
- Less time mentoring junior staff.
- Less time supporting business development.
And during peak tax season, the effect multiplies. This is why reducing rework should not be treated simply as a quality initiative.
It is a capacity strategy.
The objective is not to remove people from the process. It is to make sure experienced people are spending their time where their expertise actually matters.
Not zero mistakes. But fewer reasons for rework.
Tax work will always involve judgement.
Clients will always forget things.
New transactions will always create questions.
But the goal is to catch mistakes early, learn from recurring ones, and prevent avoidable rework from becoming part of the normal workflow.
Because the most expensive tax return is not necessarily the one with the biggest error. It may be the one your team has to prepare twice.
Want to know how Befree helps your firm with tax outsourcing? Talk to our experts today: https://befreeltd.com/uk/contact-us/