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The 23-Minute Wait: How AI Could End HMRC's Telephone Nightmare and Save UK Taxpayers 1,000 Years

Imagine calling HMRC with a tax question and getting an instant answer—no hold music, no frustration, no wasted morning. This isn't fantasy; it's what artificial intelligence could deliver for millions of UK taxpayers.

The Current Crisis

The numbers behind HMRC's telephone service are staggering:

•36.7 million calls annually (141,000 per working day)
•23-minute average wait times
•Only 66.4% of calls answered (far below the 85% target)
•33.6% call abandonment rate
•£57.16 cost per handled call
•719 years of taxpayer time spent on hold annually

For businesses and individuals alike, this represents not just frustration but real economic cost—productivity lost, deadlines missed, and opportunities squandered while waiting for basic tax information.

The AI Solution

Modern AI voice agents could revolutionize this experience by:

1. Providing Instant Answers

AI could immediately resolve 25-35% of calls that involve basic information requests, status checks, and simple calculations—with zero wait time.2. Intelligent Triage

For more complex queries, AI could gather information, verify identity, and route calls to the right specialist—saving 5-7 minutes per call and ensuring human experts focus on cases that truly need them.3. 24/7 Availability

Unlike human agents, AI never sleeps, meaning taxpayers could get help at 10 PM, on weekends, or during peak filing periods without service degradation.4. Consistent Quality

Every caller would receive the same accurate information, eliminating the variability that comes with human agents having different knowledge levels or having "off days."

The Transformative Impact

Our analysis reveals the potential benefits are enormous:

For Taxpayers:

•Wait times reduced by 50-70% (from 23 minutes to 7-11 minutes)
•1,084 years of time saved annually (no longer spent on hold)
•Answer rates improved to 81-86% (meeting or exceeding targets)
•Customer satisfaction increased from 80% to 85-95%

For Government:

•£35-160 million annual savings
•£4.5 million implementation cost with 6-12 month payback period
•£600+ million net benefit over five years
•Better data on taxpayer needs to inform policy

For HMRC Staff:

•Focus shifts from routine queries to complex cases requiring expertise
•Enhanced job satisfaction through more meaningful work
•New career paths in AI training and oversight
•Improved productivity with AI handling basic tasks

Implementation: Practical and Proven

This isn't speculative technology. AI voice systems are already handling millions of customer interactions in banking, telecommunications, and retail. A phased approach could begin with a pilot handling 10% of calls, expanding as performance targets are met.

The initial investment of £4.5 million would be recovered within a year, making this one of the most cost-effective digital transformation initiatives possible in government.

Beyond Cost Savings: A New Relationship with Government

The true value goes beyond efficiency. When taxpayers can get instant, accurate help with their tax obligations, it fundamentally changes their relationship with government. Frustration turns to satisfaction. Compliance improves. Trust increases.

For too long, poor service has been accepted as inevitable in government interactions. AI offers the opportunity to demonstrate that public services can be as responsive, efficient, and customer-focused as the best private sector experiences.

The technology exists. The business case is compelling. The only question is whether HMRC will seize this opportunity to transform the taxpayer experience from a 23-minute wait to an instant response.

UK taxpayers deserve nothing less.

The 23-Minute Wait: How AI Could End HMRC's Telephone Nightmare and Save UK Taxpayers 1,000 Years
Michael Relf August 7, 2025
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