30-60-90 day plan for inventory managers
On this page
- What does an inventory manager own that a warehouse manager does not?
- What does the 30-60-90 day plan look like?
- How do you measure inventory record accuracy?
- Which accounting, safety and traceability rules does a new inventory manager check?
- Which numbers should a new inventory manager baseline?
- What does "on track" look like at day 30, 60 and 90?
- A filled example
- How should the hiring manager use this plan in the final interview?
- What should the hiring manager ask at the check-ins?
- What the hiring manager owes a new inventory manager
- Common mistakes
- Adapting the plan
- Questions people ask
A 30-60-90 day plan for a new inventory manager should spend the first 30 days measuring how far the system record is from the shelves (a blind sample count by ABC class), mapping who can adjust inventory and why, and aging the stock with finance; days 31-60 running a cycle count program in which every variance is investigated before it is adjusted; and days 61-90 correcting replenishment parameters, agreeing an excess and obsolete plan with finance and planning the next physical count. As of November 2026, inventory measured at FIFO or average cost is carried at the lower of cost and net realizable value under FASB's Topic 330, and FDA has said it will follow Congress's direction not to enforce its food traceability rule before July 20, 2028.
This plan is for the operations director, controller or owner hiring an inventory manager or inventory control manager to own the accuracy and value of stock at one or more sites, often with inventory analysts and control clerks. The building, its labor plan and forklift records belong to the 30-60-90 day plan for warehouse managers; the supplier network and the planning cycle to the 30-60-90 day plan for supply chain managers; and buying to the 30-60-90 day plan for procurement managers.
What does an inventory manager own that a warehouse manager does not?
| Area | Inventory manager | Warehouse manager | Supply chain manager |
|---|---|---|---|
| The record | On-hand quantities and locations in the ERP or WMS, and the adjustment process | The processes that create errors: receiving, putaway, picking | Uses the record to plan |
| Counting | The cycle count program and the physical count plan, with finance | Labor and floor time for counts | Not involved |
| Value | Aged stock, excess and obsolete review, shrink, cost data for write-downs | Damage reporting | Inventory targets in the planning cycle |
| Replenishment | Reorder points, safety stock and min-max by item and location | Space for what arrives | Network policy and supplier lead times |
| Lots and expiry | First-expired-first-out rules, holds, quarantines, recall traces | Physical rotation | Supplier quality |
What does the 30-60-90 day plan look like?
30-60-90 day plan — [Name], Inventory Manager, [sites]
Reports to: [operations director / controller] Start date: [date]
Sites: [N] Items: [N] SKUs Inventory value: [$]
Systems: [ERP], [WMS], [handheld scanners] Costing: [standard / FIFO / average]
Team: [N] analysts / control clerks Auditors: [firm, year-end date]
DAYS 1-30 — Measure the record and the value
Goals:
- Blind sample count across A, B and C items and each location
type; accuracy by class against an agreed tolerance
- Map adjustments: who can adjust, reason codes, approval
thresholds; pull [13] weeks of adjustments by reason, user, value
- Age the inventory with finance: on hand by age band, items with
no movement, expiring lots; how the reserve is set today
- Learn the costing method and where variances post
- Walk receiving, returns and production issue points
- List stock held by others or for others: consignment, 3PL,
customer-owned
Deliverables by day 30:
- Accuracy baseline by class, with the top causes of variance
- Adjustment map with control gaps; aging agreed with finance
Check-in: day 30
DAYS 31-60 — Run the count program; control adjustments
Goals:
- Cycle count calendar by class (example: A monthly, B quarterly,
C twice a year); blind counts; recount above tolerance
- No adjustment without an investigated cause; approval by value
- Separate duties: counters do not approve their own adjustments
- Fix the top variance cause with the warehouse manager
- Review replenishment parameters for the top [50] items: lead
time, safety stock and reorder point against actual use
Deliverables by day 60:
- Count program running at least four weeks, causes logged
- Adjustment approval rule signed off by the controller
Check-in: day 60
DAYS 61-90 — Value, replenishment and the next count
Goals:
- Excess and obsolete review with finance and sales: return to
vendor, rework, discount or scrap, with values
- Implement corrected parameters; track stockouts on A items
- Physical count plan, or the case for relying on cycle counts:
date, cutoff, tags, instructions, recounts, auditor attendance
- Lot control: expiry rule, hold status, and a drill tracing one
lot forward to customers and back to the supplier
Deliverables by day 90:
- Accuracy up on a second sample count against day 30
- Excess and obsolete plan and count plan agreed with the controller
Check-in: day 90 — full reviewCount frequencies and numbers in brackets are examples; set them by value, velocity and risk.
How do you measure inventory record accuracy?
The plan rests on one number the new manager should be able to defend. With example figures:
- Accuracy by count: locations or items counted within tolerance, divided by all counted. 352 of 400 locations within tolerance is 88 percent.
- Tolerance by class: agree it before counting, for example zero for high-value A items and a small percentage for low-value C items.
- Absolute against net adjustments: an overage of $12,000 and a shortage of $11,000 net to $1,000, but the record was wrong by $23,000. Report both.
A high net accuracy with large absolute adjustments usually means the same errors repeat in both directions, such as units of measure entered as each instead of case, or returns put away without a scan. Those are the causes month two should remove.
Which accounting, safety and traceability rules does a new inventory manager check?
These are summarized as they read in November 2026. They are not legal, tax or accounting advice; the controller, the tax advisor and the auditors decide how they apply.
| Area | What the rule says | What the inventory manager checks |
|---|---|---|
| Book valuation (FASB ASU 2015-11, Topic 330) | Inventory measured using FIFO or average cost is carried at the lower of cost and net realizable value: estimated selling price less reasonably predictable costs of completion, disposal and transportation. LIFO and retail-method inventory stays at the lower of cost or market | That aged, damaged and obsolete stock reaches the controller with ages, quantities and realistic selling prices |
| Tax methods (IRS Publication 538) | Describes cost, lower of cost or market and retail valuation, FIFO and LIFO identification, and a small business exception for taxpayers under an inflation-indexed gross receipts test | Whether the tax method differs from the books, which is the tax advisor's call |
| Food traceability (FDA Food Traceability Rule) | Persons who manufacture, process, pack or hold foods on the Food Traceability List keep key data elements for critical tracking events, assign traceability lot codes, keep a traceability plan and provide records to FDA within 24 hours. FDA proposed moving compliance to July 20, 2028, and Congress directed FDA not to enforce the rule before that date | Which items are on the list, and whether lot codes are captured at receiving and shipping |
| Chemical stock (29 CFR 1910.1200(e)(1), (g)(8)) | The written hazard communication program includes a list of hazardous chemicals present, and safety data sheets must be readily accessible to employees during each shift | New chemical items have a safety data sheet before first receipt, and the chemical list matches the item master |
Forklift operator training and evaluation records, which come up during counts, are covered in the warehouse manager plan.
Which numbers should a new inventory manager baseline?
The measures below are examples. Agree the definitions with finance in month one.
| Area | Example measures | What the new manager should be able to explain |
|---|---|---|
| Accuracy | Record accuracy by class and location type; absolute and net adjustment value | Which processes create the errors |
| Control | Adjustments by reason code and user; share coded "other" | Whether adjustments are explained or just entered |
| Value | Days on hand or turns; stock by age band; excess and obsolete value; shrink | Where cash sits, and what will never sell |
| Service | Stockouts and fill rate on A items; backorders caused by record errors | Whether errors reach customers |
| Program | Scheduled counts completed; recounts; average days to resolve a variance | Whether the count program runs or slips |
What does "on track" look like at day 30, 60 and 90?
| Checkpoint | On track | Worth a direct conversation |
|---|---|---|
| Day 30 | Sample count done blind; accuracy by class; adjustment rights mapped; aging agreed with finance | Accuracy taken from the system's own report; nobody knows who can adjust |
| Day 60 | Counts on schedule; every variance above tolerance has a cause; approval rule signed; top cause being fixed | Variances adjusted to match the count without investigation |
| Day 90 | Second sample count better than day 30; excess and obsolete plan with values; count plan agreed | Aged stock still undecided; the year-end count planned the week before |
A filled example
Inventory manager: Luis Herrera (invented), new inventory manager at a distributor of commercial plumbing parts with two warehouses and about 18,000 items. All details are examples.
Day 30: His blind count found 81 percent of locations within tolerance, with A items worse than C items because they moved fastest. Eleven people could adjust inventory, including receiving clerks, and much of the adjustment value was coded "other." Net adjustments looked small; absolute adjustments were several times larger.
Day 60: Adjustment rights dropped to three people, with the controller approving anything above a set value. Variance research showed one supplier's items set up as each in the item master but received as boxes of ten, so the unit of measure was corrected on about 200 items. Counts by class ran on schedule.
Day 90: A second sample count reached 92 percent within tolerance. Finance and sales agreed to return part of the aged stock to vendors for credit and scrap the rest against the reserve. The controller and the audit firm agreed the year-end count plan, and a recall drill traced one lot to its customers in under an hour.
How should the hiring manager use this plan in the final interview?
Give every finalist the same brief: sites, item count, inventory value, the last two months of adjustments with names removed and one known problem. Score the plans with the rubric in how to evaluate a 30-60-90 day plan in an interview; the inventory clerk screening questions cover the team the new manager will hire. Questions for managers:
- "Net adjustments are tiny but the absolute value is large. What does that tell you?"
- "Who should be allowed to adjust inventory, and who approves it?"
- "Finance wants to write off slow stock and sales says it will sell. How do you settle it?"
- "Walk me through tracing one lot forward to customers and back to the supplier."
Strong candidates insist on blind counts and causes before adjustments, and they bring the controller in early rather than at year end.
What should the hiring manager ask at the check-ins?
- Day 30: How accurate is the record by class, and which process causes most of the error? Who can adjust today?
- Day 60: How many variances had a real cause? What changed in the item master or the process?
- Day 90: What will we write down or return, and for how much? Can we rely on cycle counts at year end?
What the hiring manager owes a new inventory manager
- Report access in the ERP and WMS, including the adjustment log with user names.
- Authority to change adjustment rights, agreed with the controller.
- Count labor from the warehouse on a fixed schedule, not whenever the floor is quiet.
- Cost and sales history for aged items, and a seat in the reserve discussion.
Common mistakes
- Adjusting to the count. The record matches for a day and the cause stays.
- Reporting net accuracy only. Offsetting errors hide how wrong the record is.
- Counting on the system's prompt. Counters who see the expected quantity tend to find it.
- Leaving aged stock to year end. Decisions get made in a hurry, at the worst prices.
Adapting the plan
- Manufacturing: add work in progress, bill of materials accuracy and backflush errors to the day-30 baseline.
- Retail: weight shrink, store counts and receiving at stores; agree shrink definitions with loss prevention.
- Food and other lot-controlled goods: put the traceability rule above and expiry rules into month one, with a recall drill by day 60.
- Third-party logistics: client-owned stock makes accuracy a contract measure; add each client's count and reconciliation terms.
If the role reports to finance, the 30-60-90 day plan for controllers shows what the controller is working on in the same quarter, including the audit relationship.
Questions people ask
What should a new inventory manager do in the first 30 days?
Run a blind sample count across A, B and C items to measure how far the system record is from the shelves, map who can adjust inventory and pull 13 weeks of adjustments by reason, user and value, age the stock with finance, learn the costing method, and walk receiving, returns and production issue points, where most variances start. Count frequencies and approval rules change only after that baseline.
How do you calculate inventory record accuracy?
Divide the number of locations or items counted that matched the system within the agreed tolerance by the total number counted. For example, 352 of 400 locations within tolerance is 88 percent. Track the absolute value of adjustments as well as the net, because overages and shortages cancel out in the net figure and hide how wrong the record really is.
How should inventory be valued under GAAP?
As of November 2026, FASB's Accounting Standards Update 2015-11 requires inventory measured using FIFO or average cost to be carried at the lower of cost and net realizable value, meaning estimated selling price less reasonably predictable costs of completion, disposal and transportation. Inventory measured using LIFO or the retail inventory method stays at the lower of cost or market. The controller sets the method; the inventory manager supplies the aging and condition data behind any write-down.
How is an inventory manager different from a warehouse manager?
A warehouse manager runs the building: receiving, putaway, picking, shipping, labor and equipment safety. An inventory manager owns the record and the value of the stock: count programs, adjustment controls, replenishment parameters, aged and obsolete stock with finance, lot and expiry control and the year-end count. The two work together, because most record errors start in warehouse processes.