Google Ads copy has strict constraints: headlines of up to 30 characters, descriptions of up to 90 characters, and a display URL. Within those limits, you need to tell a potential client what you do, why they should choose you, and what to do next, before they scroll past. This guide covers what makes accounting firm ad copy convert and gives specific examples you can adapt.
The structure of a responsive search ad
A responsive search ad (RSA), the current standard ad format in Google Search campaigns, has:
- Up to 15 headlines (30 characters each): Google tests combinations and shows the best-performing ones
- Up to 4 descriptions (90 characters each): Google shows up to 2 per ad
- Display URL path fields (15 characters each, two available)
You do not control exactly which headlines appear together. Write headlines that work independently and in combination.
What your copy needs to achieve
In the two seconds a searcher decides whether to click your ad, the copy needs to: (1) confirm relevance, confirming this is about what they searched for; (2) provide a reason to click you over the other results, a differentiator; and (3) prompt an action, telling them what to do. Headlines handle relevance and differentiation. Descriptions expand on the benefit and provide the call to action.
Headline writing for accounting firms
Include the primary keyword in at least one headline. If the ad group is for sole trader accountants in Birmingham, at least one headline should mirror that search: "Sole Trader Accountant Birmingham" or "Birmingham Sole Trader Accountant". This increases Quality Score and signals direct relevance to the searcher.
Location reference. Local search is built on proximity trust. Including your city in a headline ("Manchester Accountants", "Serving Bristol and Surrounding Areas") establishes local credibility.
Differentiators that work for accounting firms:
- "Fixed Monthly Fees" — certainty over hourly billing is a major conversion driver
- "Free Initial Consultation" — reduces the perceived risk of getting in touch
- "Specialist in [niche]" — specificity signals expertise
- "Certified Xero/QuickBooks Advisers" — third-party credibility
- "Same-Week Appointments" — removes timing friction
- "Switch Today — We Handle Everything" — addresses the perceived hassle of switching
Headlines to avoid: superlatives without proof ("UK's Best Accountants", "Top Rated Firm"), vague descriptions ("Professional Services", "Expert Help"), and generic CTAs only (five headlines all saying "Contact Us Now" wastes the opportunity).
Fifteen headline examples to adapt
- Sole Trader Accountant [City]
- Limited Company Experts — [City]
- Fixed-Fee Accounting From £[X]/Mo
- Free Consultation — No Obligation
- Specialist Contractor Accountants
- Switch Accountants in 24 Hours
- Self-Assessment Filed for You
- Certified Xero and QuickBooks Advisers
- Local Accountants Since [Year]
- IR35 Experts — Peace of Mind
- Your Dedicated Accountant, Always
- Small Business Accountants in [City]
- Hassle-Free Payroll and Accounts
- Cloud Accounting, Fixed Monthly Fees
- Book Your Free 30-Min Call Today
Description writing for accounting firms
Descriptions expand on what a headline introduces. Two descriptions are shown per ad, typically one expanding on the service benefit and one with the call to action and a trust signal.
Description formula: Description 1: What you do + who you do it for + key benefit. Description 2: Trust signal + call to action.
Examples:
Description 1 (service and benefit): "Expert accounting for sole traders and limited companies in [City]. Fixed monthly fees, cloud-based, and fully managed. No surprises."
Description 1 (niche-specific): "Specialist accountants for contractors and IR35. We keep you compliant, maximise your take-home pay, and handle all filings."
Description 2 (trust and CTA): "ICAEW registered. Serving [City] for [X] years. Book a free introductory call, no obligation, just practical advice."
Description 2 (urgency and CTA): "Self-assessment deadline approaching? Get your return filed on time. Call us or book online, same-week appointments available."
Display URL paths
The display URL (what appears under your headline) is your website domain plus up to two optional path fields. Use the path fields to reinforce relevance:
- yourfirm.co.uk/Sole-Trader-Accountant
- yourfirm.co.uk/Contractor-Accounting
- yourfirm.co.uk/Manchester-Accountants
The path is part of the ad's visual; it signals to the searcher that your site has exactly what they are looking for.
Testing your copy
RSAs allow Google to test up to 15 headline and 4 description combinations. Review performance in the asset report (within each ad) after four to six weeks. Headlines marked "Best" are performing well; do not remove them. Headlines marked "Poor" can be replaced with new variants. "Learning" means insufficient data; give it more time before evaluating. Write at least two ads per ad group so you can compare overall ad performance as well as individual assets.
Copy for different audience segments
| Ad group | Tone | Key differentiator to emphasise |
|---|---|---|
| Sole traders / freelancers | Practical, low-friction | "Handle everything for you", "Simple fixed fee" |
| Limited company directors | Professional, commercially aware | "Tax-efficient", "Director salary and dividends advice" |
| Contractors / IR35 | Specialist, protective | "IR35 experts", "Contractor-focused", "Peace of mind" |
| Small businesses | Growth-oriented | "Grow with confidence", "Your finance partner" |
Key takeaways
- Headlines establish relevance (keyword), differentiation (what makes you different), and location (local trust).
- Descriptions expand on the service benefit and provide the call to action; one per function is the right structure.
- Avoid vague superlatives; use specific claims (fixed fees, free consultation, year founded, certifications).
- Use the display URL path fields to reinforce relevance with service and location terms.
- Review the RSA asset report after four to six weeks and replace underperforming headlines with new variants.
Frequently asked questions
How many headlines should we provide when setting up an RSA?
Provide the maximum, 15 headlines. The more combinations Google can test, the faster it identifies the best performers. With fewer than five headlines, Google's ability to optimise is limited. Aim for diversity: keyword headlines, differentiator headlines, location headlines, CTA headlines.
Can Google disapprove our ad copy?
Yes. Google disapproves ads that contain misleading claims, inappropriate content, or trademark violations. Claims like "UK's Number 1 Accountants" that cannot be verified may be flagged. Write factual, accurate copy and check the policy centre if an ad is disapproved.
Should we capitalise every word in headlines?
Title case (Initial Capitals on Every Word) is common in Google Ads headlines and generally performs well. It is more scannable in search results than sentence case or all lowercase. Avoid all caps; it looks aggressive and Google may flag it.
How often should we update ad copy?
Review performance data monthly and update underperforming ad assets. Do not change ads so frequently that Google cannot gather enough data to optimise; give each version at least four to six weeks before evaluating.
What is a pinned headline in an RSA?
Pinning forces a specific headline to always appear in a specific position (position 1, 2, or 3). This reduces Google's ability to test combinations but guarantees important elements (like your firm name or primary keyword) always appear. Use pins sparingly, typically only for legally required disclaimers or brand-critical messaging.
For more copywriting and Google Ads guidance, visit our Google Ads for accounting firms hub.