Every year, the same pattern plays out. CPA firm owners spend October and November telling themselves they’ll figure out staffing “soon.” December arrives. The holidays consume two weeks. January hits, W-2s and 1099s start flowing in, and suddenly the firm is understaffed, overwhelmed, and scrambling.

The firms that handle tax season without the chaos are the ones that set up their offshore capacity in November — not January. Here’s why the timing matters and exactly how to do it.

Why November is the deadline, not January

Offshore accounting teams need onboarding time. Not months — but enough time to understand your firm’s workflows, software setup, review preferences, and client expectations. The typical onboarding window for a dedicated offshore accountantis 10–14 business days.

If you start the engagement in early November, your offshore team is fully ramped and productive by the time W-2s arrive in January. If you start in January, you’re onboarding while simultaneously processing returns — which means the first 2–3 weeks of tax season are spent training instead of producing.

The firms that have smooth tax seasons aren’t the ones with bigger teams. They’re the ones that started earlier.

The exact timeline: November through April

Here’s the month-by-month breakdown of how firms that plan ahead set up and run their offshore tax season capacity:

November
Sign engagement. Share software access, prior-year returns, and workflow documentation. Offshore team begins onboarding.
December
Complete onboarding with 5–10 practice returns from prior year. Establish communication cadence, review process, and quality benchmarks.
January
W-2s and 1099s arrive. Offshore team is already productive. First batch of returns prepared and in review queue within the first week.
February
Volume increases. Offshore team handling 70–80% of preparation. Your CPAs focus on review, client communication, and complex returns.
March
Peak volume. Full production capacity. Extension filings identified and processed. No last-minute scramble for the April 15 deadline.
April
Final returns filed. Extensions completed. Post-season review and decision on year-round engagement or seasonal wind-down.

If your capacity plan only needs to cover Jan–Apr, explore our seasonal offshore staffing engagement model.

What you need to prepare before onboarding

The onboarding process is straightforward, but it does require preparation on your end. Here’s what you should have ready:

  • Software access: Login credentials for your tax preparation software (Drake, Lacerte, ProConnect, CCH Axcess). The offshore team works in your existing environment.
  • Prior-year returns:A sample set of 5–10 returns representing your typical client mix. These serve as the training and calibration set.
  • Workflow documentation:Your preferred preparation checklist, review process, and any firm-specific conventions. If you don’t have this documented, the onboarding process is a good forcing function to create it.
  • Communication preferences:How you want questions handled — batch queries, daily standup, Slack channel, email. Set this up front and it runs smoothly all season.
What happens if you start in January?

It’s still possible — but you lose 2–3 weeks of peak-season productivity to onboarding. For a firm processing 200+ returns, that means 30–50 returns delayed. For firms that have done this before, January starts are manageable. For first-time offshore engagements, November is strongly recommended.

Common mistakes firms make with tax season staffing

Beyond timing, there are patterns we see repeatedly in firms that struggle with offshore tax season capacity:

  • Waiting for “the perfect time”: There is no perfect time. November is the practical deadline. After that, every week of delay is a week of lost production capacity in January.
  • Starting too small:Firms that assign 5 returns to test the process never get meaningful data. Start with enough volume (20–30 returns minimum) to evaluate properly.
  • Not assigning a point person:Someone at your firm needs to be the single point of contact for the offshore team. Questions, clarifications, and feedback flow through one person — not four different partners.
  • Treating it as a “trial” instead of a commitment:If you onboard an offshore team but keep them at arm’s length, you get arm’s length results. The firms that integrate their offshore team into daily workflow get the best outcomes.

What happens after April 15?

Most firms that set up offshore capacity for tax season face a decision in April: wind down or continue year-round. The data shows that firms that keep their offshore team year-round benefit from continuity — the team already knows your clients, your software, and your standards. They shift to monthly bookkeeping, bank reconciliations, and extension processing during the off-season.

But the decision doesn’t need to be made now. Set up for tax season first. Run it. Evaluate the results. Then decide.