What a Code Audit Should Find, and What It Costs in 2026

A useful code audit finds the risks that cost money: security holes, bugs that corrupt data, fragile deploys, missing tests, outdated dependencies and accounts only one person controls. It ranks each by impact and cost to fix, in writing. Published 2026 prices for productised audits run from about $2,500 to $12,000; automated tools start free. RAITHub publishes no rates and quotes after a free 15-minute audit call.

This guide is for founders and product owners deciding whether to pay for an audit, and what to demand if they do: before a takeover, before a fundraise, or when a product has become slow and risky to change. The prices below are market figures from other firms and vendors, checked on 29 September 2026. They are not RAITHub prices.

What should a code audit actually find?

Problems that would hurt the business, not a count of style warnings. A good audit covers seven areas and traces real data through the system rather than only reading files.

Area	What it looks for	An example finding
Security	Authorisation gaps, injection, exposed secrets, weak session handling	An API returns another customer's order when the ID in the URL is changed
Data integrity	Writes that lose, duplicate or overwrite data; missing constraints and transactions	A partial update silently resets fields the user never touched
Deploy and infrastructure	Manual deploys, drift between environments, backups that were never restored	The build passes locally and fails on the host because installs resolve differently
Tests and CI	Which critical paths have tests, whether they run, whether they block merges	Checkout has no automated test and nothing gates the main branch
Dependencies	Known advisories, unmaintained packages, licence conflicts	A high-severity advisory cannot be fixed because a peer dependency blocks the upgrade
Architecture and maintainability	Duplication, dead code, modules everything depends on, change hotspots	One file changes in most pull requests and has no tests
Ownership and operations	Who owns each account, where alerts go, single points of failure	Error alerts go to a former contractor's inbox

Two of those examples happened on RAITHub's own website in September 2026 and were caught in review before launch. Every check was green while zod 4's .partial() re-applied default values on partial updates, which would have unpublished records and wiped fields; the write-up is zod 4 .partial() keeps default values. A security upgrade then failed only on the host because of a peer-dependency conflict (the ERESOLVE write-up). Neither would appear in a linter report. Both are what an audit is for.

What deliverables should a code audit include?

A written report you can act on without the auditor in the room. Insist on these five:

1. An executive summary in business terms: what is at risk, how badly, and what to do first. One page.
2. A risk register: every finding with its likelihood, impact, evidence and an estimated cost to fix. This is the part you will use for months.
3. Evidence for each finding: the file, the request or the command that shows it, so another developer can confirm it.
4. A prioritised plan that separates urgent fixes from improvements, with the order to do them in.
5. A walkthrough call where the auditor explains the findings and answers your team's questions.

Be wary of an audit that is mostly an automated tool's output pasted into a PDF, or one whose only recommendation is a rewrite by the same firm. The risk register is the test: if the findings cannot be ranked by impact and cost, the audit has not done its job.

What does a code audit cost in 2026?

Firms that publish prices put a fixed-scope audit or review between about $2,500 and $12,000, taking one to three weeks. Wider assessments bundled with fixing work cost more. These are other firms' published figures, checked on 29 September 2026:

• ASD Team lists a Release Stability Review at $2,500 over 5 to 10 working days, delivering a root-cause summary, a fragility map, a release flow diagram, a release checklist and a stabilisation roadmap (ASD Team rescue services). The page showed a limited free offer at the time of checking.
• FastRuby.io prices its Rails upgrade roadmap, a specialised audit, at $12,000 with a 2 to 3 week turnaround: two developers spend about 10 to 15 days on manual review, automated analysis and technical-debt assessment, and deliver a 15 to 50 page report (FastRuby.io roadmap).
• Idea Maker estimates $8,000 to $15,000 to assess and stabilise a small project, which includes fixing work as well as the assessment (Idea Maker rescue guide).

Where no fixed price is published, an audit is days of senior time. The table multiplies published rates by assumed effort. The day counts are illustrative, not benchmarks and not quotes.

Audit scope (illustrative)	Assumed effort	At $40/hour	At $150/hour
Small app, one repository, focused review	3 days	$960	$3,600
Typical SaaS: app, database, infrastructure	8 days	$2,560	$9,600
Several services, payments, no documentation	15 days	$4,800	$18,000

The rate range comes from Clutch, which reports that most software development companies on its platform charge $25 to $49 an hour (Clutch pricing guide), and Arc.dev, which puts senior freelance developers at $75 to $150 an hour (Arc.dev freelance rates). Eight hours a day is assumed.

What moves the price most is not lines of code. It is how many systems are involved, whether the code can be built and run at all, whether payments or personal data are in scope, and how much documentation exists. For what a full takeover costs after the audit, see what code rescue services cost.

Are code audit tools and AI review enough on their own?

They are enough for a continuous baseline and not enough for a decision. Tools find known patterns across every file, cheaply and repeatedly. They cannot tell you whether a correct-looking write breaks a business rule, or whether the account that runs production belongs to someone who has left.

Option	2026 price	Good at	Misses
SonarQube Cloud	Free up to 50,000 lines of code; Team plan from $34 a month	Code smells, duplication, common vulnerability patterns, coverage tracking	Business logic, data flows across services, operations
GitHub Secret Protection	$19 per active committer a month	Secrets committed to repositories	Secrets set by hand in dashboards or held by people
GitHub Code Security	$30 per active committer a month	Static analysis and dependency advisories in pull requests	Authorisation rules specific to your product
AI code review assistants	Varies by vendor	Fast first pass on a diff; explaining unfamiliar code	Evidence and ranking; can state wrong things confidently
Human-led audit	See the section above	Tracing real data, ranking by business impact, ownership and deploy risk	Costs days of senior time

Sources: SonarQube plans and pricing and GitHub security plans, checked on 29 September 2026.

The practical answer is both. Run a static analysis tool and a secret scanner in CI permanently; they are cheap and never get tired. Pay for a human audit at decision points: a takeover, an acquisition or fundraise, or before a large rebuild. A human auditor should also use the tools, and should explain which findings actually matter.

How long does a code audit take?

One to three weeks for most products, based on the published offers above. Access is the usual delay, not the review itself: an auditor waiting for repository, hosting and database access is not auditing. Have the accounts ready before the start date, and ask for read-only access where the platform supports it.

What should you ask before buying a code audit?

• What exactly will I receive? Ask for a sample report with the client's details removed.
• Will you build and run the system, or only read the code? A deploy problem is invisible to a read-only review.
• Is the price fixed, and what happens if the scope turns out larger?
• Do you trace data flows for payments and customer records, end to end?
• Is the next phase priced separately? An audit should be useful whoever does the fixing.
• Will you sign an NDA before you see the code? A serious auditor expects to.

Why RAITHub for a code audit, and when you don't need us

RAITHub's audit is the 2-week diagnostic at the start of every Code Rescue engagement: a codebase audit, an infrastructure audit and a risk register, delivered as an audit memo and a plan with a fixed scope. It builds and deploys the system rather than only reading it, traces the write paths that touch money and customer data, and defaults to keeping what works. The published write-ups above show the method on real code before you hire. RAITHub publishes no rates: after the free 15-minute technical audit call you get a written, fixed quote with its assumptions listed, and the pricing page explains the model.

You don't need RAITHub if:

• You want a continuous baseline. A static analysis tool and a secret scanner in CI will do that for a fraction of the cost.
• You have one known problem. Send it through the fix one issue page instead of paying for a broad audit.
• You need a certified auditor or a formal compliance attestation. RAITHub is not SOC 2 or ISO 27001 certified and does not issue compliance certificates.
• You need a penetration test by a specialist security firm. An engineering audit covers security risks in the code, but it is not a replacement for one.

To book the diagnostic, pick Code Rescue on the contact form and start with the free 15-minute audit call.

Market prices checked on 29 September 2026.

Frequently asked questions

How much does a code audit cost?

Published 2026 prices for fixed-scope audits and reviews run from about $2,500 to $12,000, taking one to three weeks. Larger systems cost more. Automated tools start free. RAITHub quotes a fixed price after a free 15-minute call.

What does a code audit include?

An executive summary, a risk register with likelihood, impact, evidence and cost to fix for each finding, a prioritised plan and a walkthrough call. It should cover security, data integrity, deploys, tests, dependencies, architecture and account ownership.

Can an automated tool replace a code audit?

No. Tools find known patterns and should run in CI permanently, but they cannot judge business logic, trace data across services or find operational risks such as accounts held by a former contractor.

Can AI do a code audit?

AI assistants are useful for a fast first pass and for explaining unfamiliar code. They do not provide evidence you can rely on or rank findings by business impact, so use them alongside a human review, not instead of one.

How long does a code audit take?

Usually one to three weeks. Delays mostly come from access, so have repository, hosting and database access ready before the start date.

When should I pay for a code audit?

At decision points: taking over a codebase, before a fundraise or acquisition, before a large rebuild, or when changes have become slow and risky. For day-to-day quality, automated checks in CI are enough.