There is no single standard fee. A CPA’s tax preparation fee in California depends on the return type, the number of filings, the condition of the underlying records, the complexity of the situation, and the scope of services agreed in writing. Anyone who looks up the average cost of tax preparation by a CPA and expects one reliable number will be disappointed, because two clients filing the same form can need very different amounts of work.
Several distinctions explain most of the variation:
The fairest way to compare proposals is to compare the work included, the assumptions behind the quote, and the services excluded. This guide explains the seven factors that set the fee, which ones you control, and how to line up quotes so you are comparing like with like.
Short answer: fees follow the work required, not the number of pages in a return or the name of the form. The seven drivers are return type, states, entities, bookkeeping quality, K-1s and supporting schedules, planning beyond filing, and prior-year issues, notices, and turnaround.
Two clients can submit the same type of return and generate very different workloads. One has a single income source, reconciled books, and no state complications. The other has several income sources, a multi-owner structure, depreciable assets, a prior-year correction, and a pending notice. The form is the same. The effort is not.
The variables that move the workload include:
A professional fee also reflects technical judgment, review, research, and responsibility for the result, not just data entry. And a preparation fee is not the total cost of keeping compliant financial records. Bookkeeping, planning, and notice work may sit outside it, which is why scope matters as much as price.
Each driver below changes what the CPA must do, and the table summarizes how. The examples are illustrative, not price points.
Driver | Low-complexity example | High-complexity example | Effect on scope |
|---|---|---|---|
1. Return type | Individual return with W-2 income | Business return with owners, assets, and allocations | More schedules, entity accounting, and review |
2. States | Resident of one state, income from one state | Income, residents, or activity across several states | Additional state returns and sourcing analysis |
3. Entities | One operating entity | Operating, real estate, and holding entities | More returns, reconciliations, and coordination |
4. Book quality | Reconciled books and a clean balance sheet | Unreconciled accounts and missing records | Cleanup, follow-up, and rework before preparation |
5. K-1s | One simple K-1 | Several K-1s with basis and passive-loss questions | Basis, limitation, and investment-reporting work |
6. Planning | Filing only | Projections, entity review, and election analysis | Advisory work scoped beyond the return |
7. Notices | Current-year filing, no open issues | Amended returns, unfiled years, or agency notices | Separate research, correspondence, and resolution work |
A straightforward individual return is a different job from a business return on Form 1120-S, Form 1065, or Form 1120. Business returns can involve entity accounting, balance sheets, depreciation, owner or shareholder reporting, allocations, and supporting schedules. That does not mean every business return costs more than every individual return. A dormant entity with clean records can take less effort than a complicated personal return.
Multi-state income, business activity, residency changes, and nonresident filings can each add scope, and state-specific rules differ. A state income-tax return is also not the only possible state obligation, since entity-level taxes, fees, and other registrations may apply. Operating online does not automatically mean a filing in every state, so the CPA should assess your actual connections rather than assume.
Each additional entity can bring its own records, reconciliations, and coordination with the owners’ personal returns. Think of an operating company, a real estate entity, and a holding company. But an additional entity does not always require its own federal income-tax return, because tax classification matters. A single-member LLC, for example, is generally disregarded for federal purposes, and California follows the federal classification, though state fees and filings can still apply.
Reconciled, complete records let a CPA move quickly to preparation. Incomplete or unreconciled books can require bank and credit-card reconciliations, transaction categorization, loan and payroll tie-outs, fixed-asset schedules, balance-sheet cleanup, and review of unusual transactions. That cleanup is accounting work. It may be a separate engagement, or it may change the preparation scope and the assumptions behind the quote.
Partnership, S corporation, trust, and other K-1 information flows into the owner’s individual return. Several K-1s, basis calculations, passive activity limits, at-risk rules, and investment transactions can each add work. Not every K-1 creates the same effort: one simple K-1 with a clear basis history is very different from a late, amended K-1 from an entity with limited reporting.
Preparation reports what happened. Planning looks ahead, and it usually involves separate work, such as:
Planning may be scoped separately, included in a broader engagement, or offered through a different arrangement. It does not always reduce taxes, and no strategy suits every client.
Amended returns, unfiled prior years, IRS or FTB notices, accounting discrepancies, missing historical records, and late corrected information returns all add work that a standard preparation fee may not cover. Tight deadlines can also affect scope and scheduling. Some firms charge for rush requests and some do not, so ask rather than assume.
Inherent to your situation: return type, number of states, number of entities, ownership structure, and the number of K-1s. These reflect how your business and investments are set up.
Largely within your control: bookkeeping readiness, how complete your documents are on day one, how early you disclose known issues, and how much lead time you give. Clean, reconciled books are often one of the largest controllable ways to reduce preparation effort, though they do not guarantee a lower quote.
Next step: If you want these drivers translated into a written scope for your situation, Request a Scoped Proposal.
The form type is only one part of a quote, but it shapes the baseline work.
Return type | Typical work involved | Common complexity drivers | Questions to ask about scope |
|---|---|---|---|
Individual (Form 1040) | Income reporting, deductions, credits, state return | Rentals, investments, K-1s, self-employment income, multiple states | Which schedules and state returns are included? |
S corporation (Form 1120-S) | Business financial statements, shareholder reporting, Schedule K-1s | Distributions, payroll and reasonable compensation, depreciation, state filings | Are shareholder returns, payroll review, and K-1s included? |
Partnership (Form 1065) | Partner allocations, capital accounts, Schedule K-1s | Agreement terms, contributions and distributions, liabilities, special allocations | Who maintains capital accounts, and are K-1s included? |
C corporation (Form 1120) | Corporate taxable income calculation, state returns | Corporate accounting, entity-specific issues, state filings | Are state returns and estimated payments included? |
An S corporation files Form 1120-S only for years in which it holds an S election, and not every S corporation has the same payroll or distribution picture. A partnership files Form 1065 and issues K-1s to each partner, and the partnership agreement and ownership arrangements can change the complexity. In California, S corporations file Form 100S and LLCs follow their federal classification for California purposes, which is why entity classification belongs in any scope discussion. Entity-selection questions are separate legal and tax advice and outside the scope of this article.
Handing a CPA reconciled financial statements is a different job from handing over a folder of unreconciled transactions. Organized records can reduce information requests, duplicated work, and delays. No one can promise a specific dollar or percentage reduction, because the effect depends on the engagement.
A preparation-ready package usually includes:
Bookkeeping cleanup is accounting work, not automatically part of a tax return engagement. If your records need attention first, see how bookkeeping and financial management or outsourced bookkeeping services can keep them current throughout the year.
Neither model is universally best. They fit different levels of certainty.
They offer cost predictability, defined deliverables, and easier budgeting. Ask which returns and state returns are included, whether bookkeeping cleanup and amended returns are excluded, whether notice response is included, and what assumptions could change the quote.
They are flexible for work with uncertain scope, and charges can reflect actual time spent. Ask for the billing rates, whether there is an estimate or budget, whether you will be told if scope expands, and how research and extra communication are billed.
Line up the number and type of returns, bookkeeping responsibilities, planning, review process, state filings, notice handling, delivery expectations, included meetings, exclusions, and billing terms.
A hypothetical example. Proposal A covers one federal business return. Proposal B covers the business return, the owner’s individual return, the state filings, and one planning meeting. Even before looking at any amount, the two describe different jobs, and the difference may reflect real scope rather than a better or worse offer. Neither is necessarily better; the right one depends on what you need done.
Next step: To see how a written scope handles these items for your business, Request a Scoped Proposal.
No survey gives a California-specific price for a business return, but two professional-association surveys do publish business-return fee figures. They are national, member-reported, and not quotes. Treat them as a sourced starting point, not a price list.
Return | NSA 2020 study: national average | NSA 2024 report: reported average range | Notes |
|---|---|---|---|
Form 1120-S (S corporation) | $903 | Not reported | Business return |
Form 1065 (partnership) | $733 | Not reported | Business return |
Form 1120 (C corporation) | $913 | $750–$1,250 | Business return |
Form 1040, itemized (for contrast) | $323 | $300–$600 | Individual return |
Where the figures come from. The 2020 figures are national averages (means) from the National Society of Accountants’ Income and Fees study. The survey was conducted in 2020 and produced 1,009 usable responses from NSA members, an 18.8% response rate. Respondents were 44% enrolled agents and 28% CPAs. The 2024 ranges come from the NSA 2024 Profit and Practice Report summary, which draws on 183 participants (34% CPAs), labels its figures “average fee” without saying whether they are means or medians, and reports no Form 1120-S or Form 1065 figure.
How to read them. In the 2020 study, the three business-return averages fell between about $730 and $915, and NSA reported average hourly rates of roughly $177 to $182 for the same returns. Those figures are several years old. The same NSA table shows the Form 1120-S average rising from $656 in 2007 to $903 in 2020, and the National Association of Tax Professionals reports that most preparers raise fees every one to two years, typically by 6% to 10%. The 2020 averages should therefore not be read as current prices. NATP’s 2025 study, for its part, does not publish business-return fees in its public materials.
What they leave out. Neither survey breaks results down for California, and the figures reflect each surveyed practice’s own scope. They do not tell you whether state returns, bookkeeping cleanup, planning, or notice work were included. A multi-owner, multi-state business with unreconciled books can sit well outside any national average, and a simple single-owner entity with clean records can sit below it.
NexusWorks is an accounting and tax services provider. Its approach to a tax preparation engagement is a practical example of setting expectations before work begins:
Businesses that want year-round support alongside filing can also look at financial advisory and optimization or fractional CFO services. You can learn more about NexusWorks before reaching out.
A quote is only as good as the description behind it. Before you call, gather:
A quote may be revised if the actual records, number of filings, or requested work differ materially from the original description. That is not automatically improper, but scope changes should be explained clearly. Mention known complications early so proposals rest on realistic assumptions, and confirm any CPA’s license through the California Board of Accountancy License Lookup.
The average cost of tax preparation by a CPA is a less useful number than a clear scope. Understand which of the seven drivers apply to you, get your records ready, and compare proposals on what is included and excluded, not just the amount.
Next step: If you would like a written scope for your situation, Request a Scoped Proposal or contact NexusWorks. A proposal depends on the information provided, and no price or turnaround is guaranteed in advance.
There is no single standard fee. It depends on the return type, states, entities, bookkeeping quality, and the written scope. A reliable figure comes from a proposal based on your actual records.
Published averages vary by survey method, respondent type, and return complexity. Published surveys generally do not isolate California CPA business-return fees, so this article does not quote one. Evaluate your own quote against the seven drivers instead.
Not always, but business returns often involve entity accounting, balance sheets, depreciation, owner reporting, and allocations. Complexity, not the form alone, drives the work.
Not automatically. Bookkeeping cleanup is accounting work that may be a separate engagement or may change the preparation scope. Confirm it in writing.
It depends on the scope. State obligations vary with residency, income, and business activity, so ask which state returns are included.
