How Much Should a Business Spend on Outsourced Accounting and Tax Services?

Business owners ask this all the time: How much is normal to spend on outsourced accounting and tax services?

It is a smart question, but not one with a single national average that applies across the board. The right amount depends on the size of the business, how complicated the books are, how much tax planning is needed, and whether the owner wants basic compliance or ongoing financial guidance.

Still, there are some useful benchmarks.

For many small businesses, the annual cost of outsourced accounting and tax services often falls somewhere between 1% and 3% of gross revenue. Some businesses spend less. Some spend more. The percentage usually comes down to complexity, service level, and how much work is required to keep the business compliant and informed.

Why There Is No Single National Average

A lot of owners want a clean benchmark they can compare against, but accounting and tax support is not a one-size-fits-all service.

Two companies can each generate $1 million in annual revenue and still have very different needs. One may be a simple service business with clean books, one bank account, and one state tax filing. The other may have payroll, multiple owners, inventory, sales tax, messy books, and activity in several states.

Those businesses should not expect to pay the same amount.

That is why looking for a single “national average” can be misleading. A better question is this: What is a reasonable percentage of revenue for my type of business to spend on outsourced accounting and tax?

A Practical Benchmark by Revenue Size

While every business is different, these general ranges can be helpful.

Businesses under $500,000 in revenue

Smaller businesses often spend a higher percentage of gross revenue on accounting and tax support. That is because there is a baseline amount of work required regardless of size. Monthly bookkeeping, reconciliations, financial reports, payroll support, tax filings, and year-end returns all take time whether a business earns $200,000 or $2 million.

In this range, it is not unusual for total spend to land above 3% of revenue, especially if the business needs cleanup work or proactive support.

Businesses between $500,000 and $2 million in revenue

This is where many business owners begin to rely more heavily on outsourced support. They may need monthly reporting, better cash flow visibility, entity-level tax planning, and more structure around payroll and compliance.

For businesses in this range, spending around 1.5% to 4% of gross revenue on outsourced accounting and tax is often reasonable, depending on complexity.

Businesses between $2 million and $10 million in revenue

As revenue grows, accounting and tax fees often become a smaller percentage of gross income, even when the actual dollar amount increases. Businesses at this stage may benefit from better systems, cleaner workflows, and more internal processes, which can make service delivery more efficient.

A business in this range may spend closer to 0.7% to 2% of revenue, though that can rise when advisory and tax planning are more involved.

What Is Included in Outsourced Accounting and Tax Services?

When business owners compare fees, they often miss an important point: not every firm is offering the same thing.

A monthly fee might include:

• bookkeeping and reconciliations

• monthly financial statements

• payroll support

• sales tax filings

• accounts payable or bill pay support

• year-end business tax return preparation

• owner tax estimates

• tax planning meetings

• advisory or CFO-level guidance

  
  

Another provider may quote a lower number but only include basic transaction coding and year-end tax prep. On paper, the cheaper option looks attractive. In practice, it may leave

the owner without timely reporting, strategy, or support when decisions need to be made.

Why Smaller Businesses Often Pay a Higher Percentage

This is one of the most misunderstood parts of pricing.

Many owners assume that a smaller business should have very low accounting costs because revenue is lower. In reality, most accounting firms have a minimum level of work needed to serve a client properly. Bank reconciliations still need to be done. Financial reports still need to be reviewed. Tax filings still need to be prepared correctly.

That is why a business with $300,000 in revenue may spend a larger percentage of revenue on accounting and tax than a business with $3 million in revenue.

The smaller business is not necessarily overpaying. It is simply bumping into the minimum service floor required for competent support.

What Drives the Cost of Outsourced Accounting and Tax?

If you are trying to decide whether your current fees are reasonable, revenue is only one piece of the picture. Other pricing drivers include:

• number of monthly transactions

• number of bank and credit card accounts

• payroll complexity

• number of owners

• number of legal entities

• state filing requirements

• sales tax exposure

• inventory

• loan activity

• bookkeeping cleanup needs

• level of advisory support requested

• responsiveness and meeting frequency

  
  

A business with clean books and few moving parts will usually cost less to support than one with frequent catch-up work, messy records, and multiple filing obligations.

Are Outsourced Accounting Services Worth It?

In many cases, yes, provided the service is done well.

Business owners are not only paying for bookkeeping entries or tax forms. They are paying for cleaner records, more accurate reporting, fewer surprises, and better decisions. They are also buying back time that would otherwise be spent chasing numbers, fixing errors, or reacting too late to tax issues.

Strong outsourced accounting and tax support can help a business:

• understand profitability

• improve cash flow awareness

• stay compliant

• reduce avoidable penalties

• make better hiring and spending decisions

• identify tax-saving opportunities

• prepare for financing or growth

That is why the cheapest option is rarely the best benchmark.

So What Is a Reasonable Amount to Spend?

For many businesses, a reasonable annual spend on outsourced accounting and tax services will fall somewhere between 1% and 3% of gross revenue, with smaller or more complex businesses often spending more and larger, cleaner businesses often spending less.

That range is not a rule. It is a starting point.

The better test is whether the business is getting:

• reliable financial information

• timely support

• accurate compliance work

• proactive tax guidance

• clarity that helps leadership make decisions

If the answer is yes, the fee may be justified even if it is above what someone else says they are paying.

Questions to Ask Before Hiring an Outsourced Accounting Firm

Before comparing providers, business owners should look beyond the monthly price and ask:

• What services are included?

• Is tax return preparation included or separate?

• How often will financials be delivered?

• Will anyone help interpret the numbers?

• Is tax planning part of the relationship?

• How does pricing change as the business grows?

These questions usually tell you more than a headline monthly fee ever will.

Final Thoughts

There is no perfect national average for what a business should spend on outsourced accounting and tax. But there is a useful rule of thumb: most businesses should expect the cost to reflect both revenue and complexity.

A business with simple needs may require only basic compliance support. A growing company with multiple moving parts may need a broader accounting and advisory relationship. Both can be reasonable. The key is making sure the level of service matches the real needs of the business.

When the fit is right, outsourced accounting and tax should not feel like a sunk cost. It should feel like part of running a better business.

Ready to Evaluate What You’re Paying?

If you are wondering whether your current accounting and tax costs are reasonable, start by looking at what you are actually receiving in return. Price matters, but so do accuracy, responsiveness, reporting quality, and proactive advice.

The right relationship should give you confidence in your numbers and fewer surprises throughout the year. Schedule a consultation, and we’ll help you determine the most advantageous approach for the current year. Your next step? Check out our Proactive Tax Strategy & Planning for Business Owners. While you're there, take the 2-minute Tax Strategy Assessment and get some free tax strategy ideas.

We provide these articles as general information and not individualized tax advice.  They do not constitute a client relationship with you, and any information provided here should be applied at your own risk.