A CPA firm can have plenty of tax work coming in and still struggle to get returns out the door. Preparers are occupied, reviewers have their own backlog, and every missing document adds another delay to an already busy season.
Finding experienced people to share that workload isn’t getting easier, either. In the 2026 AICPA PCPS CPA Firm Top Issues Survey, firms with 11–30 professionals ranked hiring experienced staff as their biggest current concern, while managing staff workload and capacity tied for third.
For firms facing similar pressures, tax preparation outsourcing offers another way to build capacity without relying entirely on local hiring.
This guide focuses specifically on offshore tax preparation, where a U.S. CPA firm works with tax professionals overseas, often in India, while maintaining oversight of its client engagements.
We’ll walk through the outsourcing models, taxpayer consent requirements, data security, return preparation and review workflows, and what firms should have in place before getting started.
Tax preparation outsourcing is when a CPA firm delegates part of its tax preparation workload to an external team. That team might operate within the U.S. or overseas.
In an offshore tax preparation arrangement, the professionals work from another country, commonly India or the Philippines, and prepare returns using the tax software and procedures agreed upon with the U.S. firm.
The arrangement can be as simple as sending selected returns to an offshore provider during tax season. Other firms prefer dedicated professionals who work alongside their domestic staff throughout the year.
Offshore professionals can support the preparation of individual returns (Form 1040), partnership returns (Form 1065), corporate returns (Form 1120), and S corporation returns (Form 1120-S).
Their work may also include organizing source documents, preparing tax workpapers, reconciling figures, tracking missing information, and assisting with extensions.
The scope depends on the preparer’s experience and the complexity of the work. A straightforward W-2 return and a partnership return involving multiple states, K-1 allocations, and basis calculations require very different levels of expertise.
In most managed offshore arrangements, the U.S. firm continues handling client communication and overseeing the tax engagement. Preparation and some review work can take place offshore, depending on the team’s experience.
For example, Credfino’s Canopy workflow assigns simpler returns to offshore reviewers and routes more complex returns to onshore reviewers. The firm decides who reviews each return, when technical questions need escalation, and who is responsible for final approval and filing.
The important part is having those responsibilities agreed upon before work begins.
Consider a CPA firm with enough staff to handle its normal workload. During tax season, however, the same team must manage incoming documents, prepare returns, answer client questions, and meet several filing deadlines.
Hiring another full-time tax professional might be difficult to justify if the extra workload lasts only a few months.
That’s where offshore tax preparation services can help. The firm can add seasonal preparation support or use dedicated offshore staff for recurring work, depending on how much capacity it needs.
There’s another reason firms consider outsourcing. Experienced domestic accountants may spend much of their time preparing routine returns when their skills are also needed for complicated reviews, tax planning, and client advice.
Moving suitable preparation work offshore can create room for those responsibilities.
But firms need to examine their workflow first. If returns are already being prepared quickly and waiting days for a senior manager’s review, adding more preparers alone won’t solve the delay.
The better question is where work is getting stuck and whether an offshore team can help address that particular bottleneck.
CPA firms generally use three approaches to outsourcing tax preparation: per-return services, dedicated offshore staff, or a combination of both.
The choice usually depends on return volume, how predictable that volume is, and how closely the firm wants its offshore professionals involved in daily operations.
With per-return outsourcing, the firm submits an agreed number of returns and pays according to the provider’s pricing structure. This can work for smaller firms or practices that need extra capacity mainly during filing season.
A dedicated offshore professional works more consistently with the same firm. Over time, they become familiar with its tax software, client files, workpaper standards, and review preferences.
That familiarity can be valuable when the work involves recurring clients or frequent communication with the domestic team.
Outsourcing model | Suitable for | What to consider |
Per-return outsourcing | Firms with seasonal or changing return volumes | Return complexity, turnaround, and review quality |
Dedicated offshore staff | Firms with steady tax preparation needs | Training, continuity, and ongoing utilization |
Hybrid arrangement | Firms with recurring work and seasonal peaks | Work allocation, coordination, and reviewer capacity |
Some CPA firms need consistent help throughout the year but significantly more capacity between January and April.
A hybrid model allows them to retain dedicated offshore professionals for recurring responsibilities and add per-return tax preparation support when volumes increase.
For example, a dedicated professional might help with business returns, bookkeeping-related tax work, and extension preparation outside the main filing season. Additional preparers could then handle suitable individual returns during the busiest months.
One consideration applies to every model: more offshore preparation capacity also means more work moving through the review process. The firm’s available reviewers and quality-control procedures should influence how much work it sends offshore.
Suppose a client hires your CPA firm to prepare their Form 1040. You have an experienced offshore team ready to handle the preparation, but before sharing the client’s documents, there’s something you need to address: taxpayer consent.
This is one of the biggest concerns firms have about offshore tax preparation. And understandably so. Clients trust their accountants with Social Security numbers, income details, and other sensitive financial information.
Under Internal Revenue Code Section 7216, tax return preparers must follow specific rules when using or disclosing taxpayer information.
For a U.S. firm sharing tax return information with an overseas preparer, the applicable rules generally require the taxpayer’s written consent before disclosure.
For individual taxpayers filing Form 1040-series returns, IRS Revenue Procedure 2013-14 establishes additional consent requirements. These include a separate consent document, which can be attached to an engagement letter, and prescribed disclosure language.
Business returns have different consent-format requirements. For example, a compliant consent for a non-1040 taxpayer may be included within an engagement letter.
There’s also an important restriction involving Social Security numbers. These generally need to be masked before overseas disclosure unless the specific consent and adequate-data-safeguard conditions are satisfied.
Even accessing documents through a U.S.-hosted virtual desktop can count as an overseas disclosure. Keeping files on domestic servers does not remove the consent requirement.
Some clients may feel uncomfortable knowing their information will be accessed overseas.
Rather than treating consent as another signature to collect, explain how the arrangement works.
Tell them what the offshore team will handle, how their information will be protected, and who remains responsible for reviewing the return.
The conversation should also leave room for questions.
If the client refuses consent, the firm cannot proceed with that overseas disclosure. It needs to decide whether the return can be prepared onshore or whether the engagement terms need to change.
The regulations do permit a preparer to condition preparation services on qualifying consent to disclosure to another preparer assisting with the return, but the applicable consent requirements must still be followed.
Once taxpayer consent has been addressed, the next concern is what happens to the information when offshore professionals begin working.
A CPA firm may have strong internal security practices, but those controls need to extend to everyone who can access its clients’ records.
For secure tax preparation outsourcing, the first decision is how offshore professionals will access documents and tax software.
Many firms use Virtual Desktop Infrastructure (VDI), which allows professionals to work in a centrally managed environment without routinely downloading files onto their local computers. Secure document portals and practice management systems can also help manage access and keep track of client records.
Technology alone isn’t enough. A firm should understand the offshore provider’s security procedures before granting access.
Some important controls to verify include:
These checks should form part of the firm’s Written Information Security Plan (WISP).
The IRS reminded tax professionals in August 2026 that maintaining a WISP is a federal requirement. The FTC Safeguards Rule also requires covered firms to oversee service providers that handle customer information.
An offshore provider’s security promises are a starting point. Firms should request supporting evidence and ensure the agreed safeguards are reflected in their contracts.
For a closer look at the safeguards firms should verify, see how to protect client data when outsourcing tax preparation services.
Knowing that an offshore team can prepare returns is one thing. Understanding how that work moves through your firm is another.
Let’s follow a typical Form 1040 engagement.
Your client submits their W-2s, 1099s, mortgage interest statement, and other relevant documents. The offshore preparer will handle the initial return, but your domestic team will continue managing the engagement and final review.
Here’s how the work can move between them.
Before a return reaches an offshore preparer, someone needs to make sure there’s enough information to work with.
In a high-volume tax workflow Credfino developed using Canopy, the onboarding team collects the engagement letter, prior-year tax return, and completed organizer. Each request is tracked through statuses such as “With the client,” “Needs Review,” and “Completed.”
The firm also needs to confirm that any required offshore disclosure consent has been obtained before granting overseas access.
Once those initial checks are done, the operations team reviews the documents and relevant notes from the discovery call. If something is missing, say a W-2 or brokerage statement, the client receives another request before preparation begins.
The operations manager then assigns the return to an appropriate preparer using a return-specific workflow template. In this documented process, the assignment is manual, even though other parts of the workflow are automated.
That distinction matters. Software can track the work, but someone still needs to decide who is qualified to prepare it.
The offshore preparer works in the firm’s approved tax software, such as Lacerte, UltraTax, Drake, CCH Axcess, or TaxAct, and prepares the draft return with supporting
workpapers.Sometimes, a missing item only becomes obvious during preparation. In Credfino’s Canopy workflow, the preparer can raise an additional-information request.
The task then moves back to the client-response stage instead of leaving the question buried in an email.Once preparation is complete, the return moves through the assigned tax preparation quality control process.
Credfino’s six-eyes approach involves a preparer, checker, and senior reviewer. Each has a defined responsibility for preparing or checking the work.
The precise review arrangement can vary by engagement and return complexity.The reviewer should receive the draft return, supporting calculations, workpapers, notes on unusual items, and a record of unresolved questions.
That’s what makes the file ready for meaningful review, rather than simply marked as prepared.
After the assigned review is completed, any corrections go back to the preparer with clear instructions. Once the outstanding issues are resolved, the return can move to client approval.
In Credfino’s Canopy workflow, the delivery team sends the reviewed draft to the client, tracks their response, and requests an electronic signature after approval.The workflow also tracks invoicing and payment.
In this particular setup, filing takes place after both the required signature and payment are received.Once the IRS accepts the return, the filed documents and acknowledgment are uploaded to the client’s Canopy folder.The operations team can then see which returns are waiting for documents, review, client approval, signatures, or filing.
There’s no need to ask every preparer for a separate status update.For individual returns using the Practitioner PIN method, IRS Form 8879 provides the taxpayer’s e-file signature authorization. This is separate from Section 7216 disclosure consent.
One provider quotes a lower hourly rate. Another charges more but includes an experienced reviewer and delivers returns with properly organized workpapers.
The second option may turn out to be more economical if your senior accountant spends less time correcting the work.
When evaluating tax preparation outsourcing services, look at what your firm receives for the price. Ask for a sample review-ready file with taxpayer details removed. See how the supporting schedules are organized, how missing information is reported, and what happens when a return needs corrections.
How to Evaluate Tax Preparation Outsourcing Services Beyond Cost
Start with the returns your firm handles.
A preparer experienced with straightforward Form 1040 returns may not have the technical knowledge required for multi-state partnerships or complex S corporation returns.
Find out who will prepare your returns, who reviews them, and whether you’ll work with the same professionals throughout the engagement.
Technology familiarity matters too. Check whether the team can work comfortably in your tax software, whether that’s Lacerte, UltraTax, Drake, CCH Axcess, or TaxAct.
It’s also worth asking about their experience with AI-assisted tax tools, workpaper automation, and practice management systems such as Canopy or TaxDome. More importantly, understand how they verify the output.
Finally, ask how the provider handles recurring errors, follows your standard operating procedures (SOPs), and supports improvements to your workflow.
Some offshore teams can also assist with tax planning preparation and related work when they have the appropriate technical expertise.
A good offshore tax preparation provider should make your existing team’s work easier to manage. The real test is how much usable work comes back and how much review effort it still requires.
Starting with a few carefully selected returns gives your firm room to understand how the offshore team works before committing a larger volume.
But first, you need to decide which returns to assign, who will review them, and how the two teams will communicate.
Before your first handoff, it’s worth reviewing these seven things to fix before outsourcing tax preparation
Not every Form 1040 requires the same preparation skills.
A return with W-2 income and a few 1099s may be relatively straightforward. Add partnership K-1s, several rental properties, or complicated multi-state issues, and the preparation and review requirements can change considerably.
Before beginning outsourced tax preparation, classify your returns as simple, medium, or complex using your firm’s own criteria. Consider the schedules involved, technical judgment required, documentation available, and experience of the assigned preparer.
For an initial pilot, select work that matches the offshore team’s demonstrated skills. More complex returns can be introduced once you’re comfortable with the quality and review process.
Your existing team may have questions about offshore hiring. Some may worry about job security. Others may be concerned that they’ll end up correcting someone else’s mistakes.
Both concerns deserve a proper conversation.
Explain which responsibilities will move offshore, what your domestic staff will continue handling, and how questions and corrections should be communicated.
Involve your reviewers in setting workpaper standards and providing feedback during the pilot. They’re the ones who will quickly notice if the returned work is missing context or taking too long to review.
Begin with a limited number of returns and measure the work beyond preparation time.
Track:
Compare these results with your existing process.
If the offshore team produces accurate, well-documented work without overloading reviewers, you have a stronger basis for expanding. If corrections keep increasing, address the underlying problem before assigning more returns.
Tax preparation outsourcing can give CPA firms more flexibility during busy season, but the arrangement needs a working process behind it.
Start with returns your offshore team is qualified to handle. Make sure client consent and security requirements are covered, establish clear review responsibilities, and give both teams a reliable way to track the work.
You can expand the arrangement as your firm gains confidence in the results.
If you’re considering offshore tax preparation, Credfino can help you build a team and workflow around your existing tax software, review standards, and seasonal capacity needs.
Yes. U.S. CPA firms can use offshore tax preparation services, provided they follow applicable taxpayer consent, confidentiality, information security, and professional requirements. Overseas disclosure of taxpayer information must comply with the relevant IRS Section 7216 rules.
Generally, applicable taxpayer consent is required before a U.S. preparer discloses tax return information to an overseas preparer. Form 1040-series taxpayers have specific consent requirements, including additional conditions concerning Social Security numbers.
Yes, qualified offshore tax preparers can support complex Forms 1065, 1120, and 1120-S, including multi-state returns. The firm should verify technical expertise, assign appropriate reviewers, and establish procedures for escalating complicated tax matters.
The applicable signing-preparer rules determine who must sign a return. In a common managed offshore arrangement, the U.S. firm oversees final approval, obtains client authorization, and manages filing. Responsibilities should be established before preparation begins.
Tax preparation outsourcing cost depends on return complexity, volume, staffing model, and the services included. Providers may charge per return, hourly, or monthly. Compare the total cost, including domestic review and correction time, rather than quoted preparation fees alone.
Ideally, several months before peak filing season. That gives firms time to evaluate providers, complete security and consent procedures, establish workflows, train the assigned team, and test return quality before volumes increase.
The best offshore accounting model for staff development is usually the one that lets good people stay close enough to the firm for learning to accumulate.
Dedicated and consistently assigned staffing generally gives that training the most room to grow.
Other models still have their place. The real question is whether what your firm teaches today will still make the team better tomorrow.
Identify five common CPA firm bottlenecks in offshoring tax preparation and explore ways to improve workflows, efficiency, and turnaround times.
Learn how CPA firms can protect client data when outsourcing tax preparation through secure systems, access controls, and compliance practices.
Explore eight essential checks for choosing tax preparation outsourcing services, from expertise and compliance to data security and quality control.