To measure time savings from outsourcing, log onshore hours by role and task for four weeks before the handoff, log the same tasks again once the outsourced workflow has stabilized, and subtract. Count only your own team's hours, and add back the new time your people spend on handoffs and review. What remains is the capacity you actually freed.
This guide walks through that method using a hypothetical 12-person CPA firm. The firm and every figure attached to it are invented to show the arithmetic. None of it reports a real client result. Your own time logs will produce different numbers, and the steps are the same whatever they show.
Most firms that outsource bookkeeping or close work say it "freed up time," then cannot say how much. Three habits cause most of the confusion.
The first is guessing at the baseline. If nobody tracked hours by task before the handoff, the "before" number is a memory, and memories of busy months run high. The second is mixing offshore hours with onshore hours. The outsourced team still spends time on the work, and those hours belong in your cost analysis. Your capacity analysis should leave them out, because they never sat on your staff's calendars.
The third habit is forgetting the new work outsourcing creates. Someone in your office now prepares handoff files and reviews the drafts that come back. Leaving that time out overstates the savings and makes the number hard to defend in a partner meeting.
Time savings and cost savings are separate measurements. This guide covers hours and what you do with them. For the fee side of the comparison, the accounting outsourcing ROI calculator sets out how to weigh provider fees against the cost of the work you hand over.
Pick one workflow first. Monthly bookkeeping and close is a common choice because it recurs every month, so you get several clean comparison cycles within a quarter. A defined close process, such as the one in this 5-day monthly close checklist, also gives you natural task codes to track against.
For four weeks, have each person record time against a short list of codes. Keep the list small enough that people will use it:
Record the role as well as the hours. A partner hour spent fixing staff-level errors has a very different value from a staff hour spent coding transactions, and the example below shows why that matters when you convert time into revenue.
Two points improve the baseline. Log actual time from your practice management or timesheet system rather than estimates. Note the calendar period too, because a February baseline compared against a June result will show savings that are really just seasonality.
Measurement is only as clean as the handoff. Outsource tasks that have documented procedures and outputs you can check, such as bank reconciliations and transaction coding. Keep review onshore so a US accountant signs off on every deliverable.
If the outsourced work touches tax returns, build the consent step into your timeline. Under Treasury regulations, a preparer must get the taxpayer's consent before disclosing tax return information to a preparer located outside the United States, and for Form 1040 series returns the regulation at 26 CFR 301.7216-3 says a US preparer "must redact or otherwise mask the taxpayer's SSN before the tax return information is disclosed outside of the United States" unless the adequate data protection safeguard exception applies. A separate guide to Section 7216 consent covers the consent wording. Time spent collecting consents is part of the transition, so log it under its own code.
A short, structured trial makes the comparison easier to run. A 30-day pilot outsourcing engagement limits the scope to a few clients so you can measure before committing the whole workflow.
The first few weeks after a handoff are noisy. Your team spends extra time writing instructions and correcting early drafts. Measuring during that period understates the savings. Many firms wait 60 to 90 days, then log the same task codes for another four weeks, ideally in the same part of the calendar as the baseline.
Add two new codes for the after period: time spent preparing handoffs and answering the outsourced team's questions, and time spent reviewing outsourced drafts. Those two lines are what make the final number credible.
The firm in this example is hypothetical, and so is every number attached to it. It has two partners, three managers, six staff accountants and one administrator. Before outsourcing, monthly closes slipped well past the target date, managers spent evenings correcting workpapers, and partners handled review that should have stayed at manager level.
For its monthly bookkeeping clients, the firm outsourced transaction coding and reconciliations first, then added draft financial statements once the books were stable. A US senior reviewed every deliverable. The table below sets out assumed onshore hours for one month before the handoff and one month after the workflow settled.
| Onshore task (hours per month) | Before | After | Change |
|---|---|---|---|
| Staff: bookkeeping and close preparation | 85 | 20 | 65 fewer |
| Manager: rework and cleanup | 18 | 4 | 14 fewer |
| Partner: review spillover | 10 | 4 | 6 fewer |
| Staff: handoffs and offshore team questions | 0 | 6 | 6 more |
| Manager: review of outsourced drafts | 0 | 8 | 8 more |
| Total onshore hours | 113 | 42 | 71 fewer |
The net saving is 71 onshore hours a month, or 852 hours a year (71 x 12). Assume the outsourced team logs about 55 hours a month on the same work. Those 55 hours belong in the cost comparison with the provider's fee. No one in the firm worked them, so the capacity number leaves them out.
This is where a common error creeps in. If the firm had added the 55 outsourced hours to its own 42 and compared 97 against 113, it would have reported a saving of only 16 hours a month. That understates the freed capacity by more than four times. The reverse error, ignoring the 14 hours of new handoff and review time, would have overstated the saving at 85 hours a month.
Note also where the hours come from. Twenty of the 71 hours (14 manager plus 6 partner) come off senior calendars. Those are the hours most likely to turn into advisory work or business development, so report them separately from staff hours.
Freed hours do not become revenue on their own. Unscheduled capacity tends to fill with internal meetings and reactive work, so the hypothetical firm sets two rules. Managers use reclaimed time for substantive review and client work. Partners block two windows a week for client advisory and business development, and treat them like client appointments.
To estimate the revenue effect, apply a conversion rate (the share of freed hours that become billable) and your realization rate:
Added revenue = hours freed per year x conversion rate x standard billing rate x realization rate
In the hypothetical example, the firm assumes it can convert 40% of the 852 freed hours into billable work, which gives 340.8 hours. At an illustrative standard rate of $200 an hour and 90% realization, the estimate is 340.8 x $200 x 0.90 = $61,344 a year. These inputs are assumptions chosen to show the formula. Replace each one with figures from your own billing system, and track conversion and realization monthly alongside the other accounting firm KPIs your partners already review.
Some firms prefer to value freed staff time at cost rather than at billing rates. The Bureau of Labor Statistics reports that the median annual wage for accountants and auditors was $83,680 in May 2025, or $40.23 an hour. In its Employer Costs for Employee Compensation release for June 2026, benefits made up 30.0% of private industry compensation costs. Dividing $40.23 by 0.70 gives a rough loaded cost of about $57.47 an hour. This is a broad approximation, since the benefits share is an all-occupation private industry average. Your payroll records give a better figure, and the comparison of in-house vs outsourced accounting costs shows how to build one.
Freed capacity also matters when you plan for growth. If the reclaimed hours let you take on clients you would otherwise turn away, model that in your accounting firm capacity planning as well as in the revenue estimate.
Hours are the headline, and a few other measures show whether the savings are real and lasting. Track each one for the same baseline and after periods.
Quality has to hold while hours fall, so tie the rework rate to the review standards in your quality control process for outsourced accounting.
In the hypothetical example, the savings depend on routine discipline more than on any single decision.
A written close checklist, used every time, lists the support documents to attach and the checks to complete before work goes to review. This consistency lets an outsourced team learn the firm's standards quickly.
Clear review rules reduce back and forth. Define which transactions need supporting documents and the materiality threshold for follow-up questions. Writing turnaround times and error thresholds into an agreement, as described in these offshore accounting SLA clauses, gives both sides the same yardstick.
A short weekly meeting on exceptions and process fixes keeps the workflow improving. Status belongs in the tracker. The meeting covers recurring errors and edge cases, and ends with updated procedures.
Finally, re-measure every quarter. Staff turnover and new client work both shift the numbers over time.
How long should a baseline period be when measuring outsourcing time savings? Four weeks of actual logged time covers a full monthly close cycle and is the minimum most firms use. If your work is seasonal, compare the same calendar period before and after the handoff.
Should outsourced team hours count toward time saved? No. Time saved measures your onshore team's capacity, so only your own staff's hours belong in it. The outsourced team's hours belong in the cost comparison against the provider's fee.
When should a firm measure after outsourcing starts? Wait until the workflow has stabilized, which often takes 60 to 90 days, then log the same task codes for another four weeks. Measuring during the first weeks captures setup time and understates the savings.
Are the figures in this guide from a real client? No. The 12-person firm and all of its hours, rates and revenue figures are hypothetical, chosen to illustrate the method. Your own time logs and billing data will give different results.
How do you turn hours saved into a revenue estimate? Multiply annual hours freed by the share you expect to bill, your standard rate and your realization rate. Track conversion monthly, because freed hours that are not scheduled for client work rarely become revenue.
Madras Accountancy supports US CPA firms with outsourced bookkeeping, monthly close, tax preparation support and CFO services, with review kept under the firm's control. If you want to scope a workflow and set up the measurement before a handoff, contact our team.
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