Working Capital Playbook: Release Cash Across Receivables, Inventory, and Payables

Executive summary

Working capital is cash you have already spent and are waiting to get back. For a mid-market company, working capital optimization is usually the largest source of cash that does not require a new customer, a price increase, or a lender. The size of the prize is a formula, not a benchmark: every day of DSO is worth one day of credit sales, every day of DIO and DPO is worth one day of cost of goods sold.

The reason programs stall is organizational. Receivables belong to finance and sales, inventory to operations and supply chain, payables to procurement and the controller. Each team optimizes its own number, and the levers fight each other: lower inventory raises stockout risk, longer payables terms raise prices or strain suppliers, tighter credit slows sales.

This playbook runs the three levers as one program with one cash target, one weekly meeting, and one owner for the trade-offs. The first move is a baseline from your own ledger. Do not set a target before you have one.

When to use this

Use this playbook when:

• Revenue or margin is fine but cash is not, or cash conversion has worsened for several quarters.
• The 13-week cash forecast keeps missing, and the misses sit in receipts, inventory purchases, or vendor payments.
• A lender covenant, a revolver draw, or a sponsor request is putting pressure on liquidity.
• A sale or recapitalization is 6 to 18 months out and you want the working capital peg to be a negotiated number, not a surprise.
• A new CFO, operating partner, or controller has joined and needs a common view across the three levers.

Do not start here if the AR subledger, inventory valuation, or AP subledger does not reconcile to the general ledger. Every number below depends on those three tie-outs. Fix them first.

For deeper work on a single lever, use the lever guides listed under Related resources. This page is the program that sits above them.

Working capital formulas: NWC, CCC, DSO, DIO, and DPO

Use one convention across the whole program and write it down: annual or trailing-12-month flows with 365 days, or quarterly flows with 90 days. State which one every time. Mixing conventions between levers is the most common reason the three numbers do not add up.

1. Net working capital (NWC)

Reported NWC = Current assets − Current liabilities
Trade NWC = Accounts receivable + Inventory − Accounts payable

Reported NWC includes cash, debt-like items, and tax balances. For an operating program, use trade NWC, which is the part the operating team can influence. In a transaction, the definition is whatever the purchase agreement says, and it often excludes cash, debt, and some accruals. Know both.

2. Days sales outstanding (DSO)

DSO = (Ending accounts receivable ÷ Credit sales) × Days in the period

Use credit sales only. For count-back DSO, best possible DSO, and average days delinquent, see the 90-day DSO plan.

3. Days inventory outstanding (DIO)

DIO = (Ending inventory ÷ Cost of goods sold) × Days in the period

Compute it in total, then by category (raw materials, work in process, finished goods) and by item class. Total DIO hides excess and obsolete stock sitting next to stock that runs out. See inventory turns, safety stock, and excess.

4. Days payables outstanding (DPO)

DPO = (Ending accounts payable ÷ Cost of goods sold) × Days in the period

Purchases is the better denominator when you can get it (COGS adjusted for the change in inventory), because AP relates to what you bought, not what you sold. Use COGS when purchases are not easily available, and say so. See extending payables without damaging suppliers.

5. Cash conversion cycle (CCC)

CCC = DSO + DIO − DPO

CCC is the number of days between paying for inputs and collecting from customers. It is the one metric that spans all three levers, which is why it is the program's headline. A caution: it mixes a revenue base (DSO) with a cost base (DIO, DPO), so the days are not worth the same amount of cash. Always convert days to dollars before comparing levers.

6. Cash value of one day

Value of a DSO day = Credit sales ÷ 365
Value of a DIO day = COGS ÷ 365
Value of a DPO day = COGS ÷ 365 (or purchases ÷ 365)
Cash released = Days improved × Value of a day

7. Cost of carrying working capital

Annual carrying cost = Average trade NWC × Cost of capital

Use your actual revolver rate or your sponsor's required return, and say which. This turns "we released $2.15M" into "we avoid $X of annual interest or free $2.15M for use elsewhere."

8. Implied annual cost of a payment discount

Annualized cost of skipping a discount = [Discount % ÷ (1 − Discount %)] × [365 ÷ (Full-pay day − Discount day)]

For 2/10 net 30: (0.02 ÷ 0.98) × (365 ÷ 20) = 37.2%. Compare it with your cost of capital before deciding whether to stretch or to pay early.

Worked example (illustrative)

The numbers below are made up to show the method. They are not benchmarks and do not describe any real company.

A distributor has annual credit sales of $73.0M and cost of goods sold of $54.75M. Purchases are assumed equal to COGS for simplicity.

Baseline

• DSO = 9.0 ÷ 73.0 × 365 = 45 days
• DIO = 9.0 ÷ 54.75 × 365 = 60 days
• DPO = 6.0 ÷ 54.75 × 365 = 40 days
• CCC = 45 + 60 − 40 = 65 days
• Trade NWC = 9.0 + 9.0 − 6.0 = $12.0M

Program target (12 months out)

Check from the balance sheet: at target, AR = 41 × $200,000 = $8.2M, inventory = 54 × $150,000 = $8.1M, AP = 43 × $150,000 = $6.45M. Trade NWC = 8.2 + 8.1 − 6.45 = $9.85M. The reduction from $12.0M is $2.15M, which ties to the table. CCC = 41 + 54 − 43 = 52 days, down 13 days.

Note that the CCC fell 13 days but the cash released is not 13 × any single number, because the days are worth different amounts. The 6 inventory days are worth more cash than the 4 receivable days, and the 3 payables days are worth the least.

Carrying cost. At an assumed 8% cost of capital, $2.15M is worth $172,000 a year.

Trade-off 1: the discount. Suppose $6.0M of annual purchases come from suppliers offering 2/10 net 30. Taking the discount (paying on day 10 instead of day 30) saves 2% × $6.0M = $120,000 a year, and it ties up about $6.0M ÷ 365 × 20 = $328,767 of cash on average. At 8% that cash costs $26,301. Net benefit of taking the discount: about $93,700 a year. A DPO program that gives up that discount to pick up payables days has a negative return for those suppliers. The discount is an input to the program, not an exception to it.

Trade-off 2: the stockout. The inventory lever released $900,000 by cutting 6 days. If that cut is made evenly across all items, the fast movers with thin safety stock are the ones that run out. Revenue lost from stockouts reduces DSO's denominator and can wipe out the gain. This is why the inventory target is set by item class, not as a flat percentage.

Trade-off 3: the peg. If this company were sold at the end of the year, and the peg was set from a trailing 12-month average trade NWC of $12.0M, closing NWC of $9.85M would be $2.15M below the peg. Depending on the agreement, the price would be adjusted down by up to $2.15M. The cash the program released would be handed to the buyer unless the peg is reset to reflect the new run rate. See the peg section below.

Phasing (illustrative). Cash does not arrive on the target date. A plausible 90-day release schedule:

Receivables move fastest because billing lag and the first past-due bucket are within the company's control. Inventory moves last because it depends on purchase orders already in the pipeline and on supplier lead times. These are assumptions for the example. Yours come from your own order book and lead times.

Diagnostic questions

Answer these from the ERP in a day or two. Anything you cannot answer is a finding.

1. Do the AR, inventory, and AP subledgers each reconcile to the general ledger at month-end with no unexplained difference?
2. What are DSO, DIO, DPO, and CCC for each of the last 12 months, computed one consistent way?
3. Who owns each of the three numbers by name, and who owns the combined CCC?
4. Which customers, item classes, and suppliers make up 80% of the dollars in each balance?
5. What is the lag between shipment and invoice, and between receipt of goods and receipt of the supplier invoice?
6. What share of invoices is disputed, and what share of supplier invoices is held for a matching exception?
7. What is the split of inventory by raw materials, work in process, finished goods, and by age since last movement?
8. When did purchasing last review safety stock levels, and what service level does each class target?
9. What are the actual payment terms in the top 25 supplier contracts, and what are the actual days-to-pay?
10. Are early-payment discounts being taken or missed, and by whom is that decided?
11. Do any bonus plans reward one lever alone (for example, sales on bookings, purchasing on unit price, collections on past-due balances)?
12. Does the 13-week forecast use the same drivers as these metrics, or an independent set of assumptions?
13. If a sale were launched today, how would the buyer compute NWC, and what trailing average would they use?

Reading the answers: if question 3 has no combined owner, start with governance. If question 11 shows opposing incentives, fix those before announcing targets. If question 13 has no answer, fix that before the program creates a pegging problem.

The framework: one program, three levers, four controls

Treat the program as three levers sharing four controls.

Shared ownership. The CFO owns the program target. Each lever has one named owner who is accountable for its days. The key rule is that lever owners do not trade each other's numbers without a decision in the forum. A purchasing manager who extends terms by moving to a higher-priced supplier has moved cost into COGS and cash into payables. The forum should see that.

Trade-offs between levers. Each pair of levers has a predictable conflict:

Sequencing: what to do first

Sequence by three tests: speed to cash, risk to revenue and supply, and dependence on other work.

1. Baseline and ownership first. Nothing else works without it. This is two weeks.
2. Receivables quick cash and billing fixes second. They are within the company's control, reversible, and need little change to customer relationships if started with invoice lag and the first past-due bucket.
3. Payables hygiene third. Fix payment runs (pay on the due date, not early by default; capture discounts that earn more than the cost of capital) before negotiating terms. Many companies release cash by simply stopping early payments.
4. Inventory structural work in parallel from week 3, cash later. Inventory changes depend on open orders and lead times. Start segmentation and policy early; expect most of the cash in the second half.
5. Terms renegotiation last. Changes to customer and supplier terms carry relationship risk and are the hardest to reverse. Do them after the data shows which customers and suppliers are worth it.

What not to do first: broad supplier term extensions announced by letter, flat percentage inventory cuts, or a collections blitz on the largest overdue accounts without sales involvement.

Linking the program to the 13-week cash forecast

A working capital program is a plan for cash, so it must be visible in the 13-week cash flow forecast or it will not be managed.

• Receipts line. Build it from invoice-level due dates and promised dates, with a haircut for promises historically broken. Do not apply a DSO target directly to the forecast. A target is not a collection.
• Inventory purchases. Use open purchase orders and planned receipts. A lower DIO target should appear as specific orders deferred or cancelled, not a percentage.
• Vendor payments. Build from approved invoices and the payment run calendar. A longer DPO target should appear as changed payment dates for specific suppliers.
• Program line. Keep a separate line for the program's expected release, by lever and by week, so the variance between plan and actual is visible and owned.
• Weekly bridge. Each week, compare forecast to actual cash by line and tag each miss as timing (it will arrive next week) or permanent (it will not). Timing misses shift the schedule; permanent misses change the program.

If the forecast and the program metrics use different drivers, one of them is wrong. Reconcile the forecast's implied DSO, DIO, and DPO to the metrics monthly.

Linking the program to the working capital peg in a transaction

In an acquisition, the purchase price is usually set on a cash-free, debt-free basis with a target level of net working capital, the peg. If closing NWC is below the peg, the price falls by the shortfall. If it is above, the price rises.

Four points matter for operating partners and CFOs preparing for a sale:

1. Released cash is only yours if the peg reflects it. In the example, trade NWC fell from $12.0M to $9.85M. A peg set at the old trailing average takes the $2.15M back at closing. If the buyer's peg is set on a period before the program, you can lose the benefit. If it is set on the new run rate, the cash is yours.
2. Run rate versus month-end. Buyers test whether a low NWC at one date is a sustainable operating level or the result of stretching payables, delaying purchases, or pulling cash forward. A quality of earnings review looks at the monthly NWC pattern, not the closing figure. See what a quality of earnings report tests before you close.
3. Definitions decide more than levels. Which accruals, customer deposits, deferred revenue, reserves, and related-party balances are in NWC is negotiated. A change in the definition can move more dollars than the entire program. Have the definition reviewed by your advisers early.
4. Window dressing reverses. Delayed supplier payments before closing become a liability the buyer expects to be treated as debt-like or reflected in the peg. Do not plan around it.

The practical step: begin tracking monthly trade NWC on a consistent definition 12 to 18 months before a sale, document what changed and why, and be ready to explain any step change as a process improvement with evidence.

Step-by-step: a 90-day working capital program

Weeks 1-2: Baseline and ownership

1. Reconcile AR, inventory, and AP subledgers to the GL. Owner: Controller. Output: clean balances with unreconciled items listed.
2. Compute DSO, DIO, DPO, CCC, trade NWC, and value per day for each of the last 12 months using one convention. Owner: FP&A. Output: one-page baseline.
3. Name owners for each lever and for the program. Owner: CFO. Output: owner list with backups.
4. Define NWC the way a buyer would, in a short memo, and compare with the management definition. Owner: Controller. Output: definition memo.
5. Set the target range, not a point. Use your own best trailing six months for each lever as the first anchor. Owner: CFO. Output: target range in days and dollars.

Weeks 3-4: Quick cash

6. Receivables. Issue invoices within one business day of shipment or completion, with a daily exception report of uninvoiced shipments. Contact the 1-30 days past-due bucket. Owner: Controller / Collections lead.
7. Payables. Stop paying early by default: schedule runs to due date, except for discounts that beat the cost of capital. Owner: Controller / AP lead.
8. Inventory. Segment SKUs by value and movement (for example ABC by value, with a movement class). List items with no movement in a stated period. Owner: Supply chain lead.
9. Start the weekly forum and the weekly scoreboard. Owner: CFO / FP&A.

Weeks 5-8: Structural causes

10. Receivables. Root-cause the top disputed invoices and fix the two largest causes at source. Review terms for the top 20 customers. See AR aging and collections prioritization.
11. Payables. Review contract terms for the top 25 suppliers against actual days-to-pay. Design approval and matching so invoices are not paid late by accident. See AP process design.
12. Inventory. Set safety stock by class using demand variability and lead time, not a flat rule. Decide actions on excess and slow stock: sell, return, rework, or reserve. Owner: Supply chain lead with Finance.
13. Resolve conflicts found in the forum. Document each decision and who approved it.

Weeks 9-12: Lock in the cadence

14. Update the 13-week forecast with program lines by lever and by week.
15. Align incentives: where feasible, tie part of sales pay to collected cash, purchasing to total cost including carrying cost, and operations to service level and inventory together.
16. Prepare the NWC history: a monthly trade NWC series with explanations, ready for a buyer or lender.
17. Review the target against actual run-rate and reset it for the next two quarters.

Templates

Program scoreboard (weekly)

Trade-off decision log

Supplier terms review

Inventory class policy

Weekly forum agenda (45 minutes)

1. Scoreboard: days, dollars, versus plan (10 min).
2. Forecast bridge: last week's cash versus forecast, timing versus permanent (10 min).
3. Lever exceptions: top items from AR, inventory, AP (10 min).
4. Trade-offs needing a decision, with the decision log (10 min).
5. Actions, owners, due dates (5 min).

Metrics and KPIs

Setting targets without invented benchmarks. Use these anchors, in order. First, your own best trailing six-month figure for each lever, which you have already shown is achievable. Second, the floor implied by your contractual terms (for DSO, your best possible DSO; for DPO, your contractual terms). Third, published figures for named listed peers from their own filings, if you have a defensible peer set. Set the first-year target as a share of the gap that your root-cause analysis supports. Do not apply a figure from an article to your customer and supplier mix. Include a guardrail metric for each lever (dispute rate for AR, service level for inventory, supplier on-time delivery or supplier health for AP) so a gain in days cannot hide damage elsewhere.

Common mistakes

1. Treating the three levers as three projects. Symptom: each owner reports a gain while total cash is flat. Fix: one target, one scoreboard, one forum.
2. Reporting days without dollars. Symptom: "we improved CCC by 10 days" with no cash figure. Days are worth different amounts. Convert before you report.
3. Month-end window dressing. Symptom: a spike in cash on the last day, reversed in the first week. Fix: track weekly and measure the run rate.
4. Stretching suppliers by letter. Symptom: late deliveries, price increases, or a supplier moving to cash on delivery. Terms changes need a supplier-by-supplier plan. A supplier that is also a customer needs a joint view.
5. Flat inventory cuts. Symptom: stockouts on top sellers while slow stock keeps aging. Set targets by item class.
6. Giving up discounts without costing them. Symptom: DPO rises and total spend rises faster. Use the annualized discount formula against your cost of capital.
7. Ignoring the peg. Symptom: a buyer's NWC schedule at diligence shows a lower balance than the peg. Track trade NWC monthly on the buyer's definition.
8. Misaligned incentives. Symptom: sales extends terms to hit bookings, procurement buys in bulk for unit price, collections targets past-due balances only. Fix incentives or accept the conflict explicitly.
9. No link to the forecast. Symptom: the program reports success and the 13-week forecast still misses. Program lines must appear in the forecast by week.
10. Declaring victory early. Symptom: targets are reset after one good month. Review the run rate over at least a quarter.

AI prompt assistance

AI can prepare the analysis and draft documents. It should not set targets or be trusted on arithmetic. Provide the data yourself and check the output before anyone acts on it.

1. Baseline the three levers.

I will paste 12 months of month-end AR, inventory, and AP balances, plus monthly credit sales and cost of goods sold. Compute DSO, DIO, DPO, CCC, and trade NWC for each month using a 365-day basis with trailing-12-month flows. Show the formula and arithmetic for the latest month. Then convert each lever's movement over the 12 months into dollars using value per day.

Check: recompute the latest month by hand for each lever. Confirm that the balances tie to your trial balance and that the AI used the same denominator for every month.

2. Surface lever conflicts.

Here are the proposed actions for each lever [paste]. Identify any pair that works against each other, state the mechanism in one sentence, and list the data I would need to quantify the trade-off. Do not invent numbers.

Check: have each lever owner confirm the mechanism is real in your business. Discard any conflict that depends on an assumption you cannot verify.

3. Draft the supplier terms review.

From this AP extract (supplier, annual spend, contract terms, average days-to-pay, discount terms), compute the annualized cost of each discount using the formula (d ÷ (1 − d)) × (365 ÷ (full-pay day − discount day)). Rank suppliers by dollars of spend and flag where average days-to-pay is more than 10 days beyond terms or where the discount annualized cost exceeds [our cost of capital].

Check: spot-check three suppliers against the contracts. Confirm the AI did not guess missing terms.

4. Draft the peg-readiness memo.

Using this monthly trade NWC series and my notes on what changed each quarter, write a one-page narrative for a buyer explaining the movement in each component as process or business change. Mark any movement that I have not explained.

Check: every explanation must be supported by a document you could show in diligence. Remove any statement you cannot support.

Implementation guide

Governance. The CFO owns the program target and chairs the forum. The Controller owns AR and AP processes and the subledger tie-outs. The supply chain lead owns the inventory policy. Procurement owns supplier terms. Sales owns customer terms and customer conversations. FP&A owns the scoreboard and the link to the forecast. Report CCC, trade NWC, cash released, and guardrail metrics to the CEO, and to the sponsor or board monthly, alongside the cash forecast.

What to expect. The first cash usually comes from invoice lag, first-bucket collections, and stopping early payments, inside the first month. Inventory and terms changes take a quarter or more and arrive in steps as orders flow through. Do not announce a final target in the first month. Announce the baseline and the plan.

Risks to watch. Service level dropping, supplier concentration or health, customer complaints about collections, and any plan that depends on one month-end.

Downloadable assets

The scoreboard, trade-off log, supplier terms review, and inventory class policy above are designed to be copied into a spreadsheet.

Related resources

• How to reduce DSO: a 90-day collections plan: the receivables lever in detail.
• Working capital: 3 levers that move your cash cycle: the short introduction to the cash conversion cycle.
• AR aging analysis and collections prioritization: who to call first.
• Inventory turns, safety stock, and excess: the inventory lever in detail.
• Extending payables without damaging suppliers: the payables lever in detail.
• AP process design: approval, matching, and payment runs: the controls behind DPO.
• 13-week cash flow forecast template: where program cash shows up weekly.
• Quality of earnings report before you close: how a buyer tests working capital.

Frequently asked questions

What is working capital optimization?

Working capital optimization is the work of releasing cash tied up in receivables, inventory, and payables by managing the three levers against one shared cash target. You baseline DSO, DIO, and DPO from your own ledger, convert each day into dollars, and resolve trade-offs between levers in one forum, so a gain in one area does not create a larger cost in another.

How do you calculate the cash conversion cycle?

Cash conversion cycle equals DSO plus DIO minus DPO. It counts the days between paying for inputs and collecting from customers. Because DSO sits on a revenue base while DIO and DPO sit on a cost base, convert each lever's days to dollars before comparing them: a DSO day is credit sales divided by 365, and a DIO or DPO day is COGS divided by 365.

How do you release cash from working capital?

Baseline first, then sequence the levers by speed to cash and risk to revenue and supply. Receivables billing fixes and payables hygiene, such as paying on the due date instead of early, usually come before inventory restructuring and terms renegotiation. Put each lever's expected release into the 13-week cash forecast by week, so progress shows up as cash rather than as a better ratio.

What is a working capital peg?

A working capital peg is the target level of net working capital agreed in an acquisition. If closing working capital is below the peg, the purchase price falls by the shortfall; if above, it rises. Which accruals, deposits, and reserves count as working capital is negotiated, so definitions can matter as much as the level. Track a consistent monthly definition well before a sale.

How this works in a System of Performance

A working capital program fails in the gaps between teams: the collections note in one system, the safety stock decision in another, the payment run in a third, and the trade-off agreed in a meeting nobody wrote down. A Performis routine can take on a recurring job like this, with the scope and fit agreed with you: it works from the records your team supplies, prepares the work for your named reviewer, and keeps each approval on record. To see where your own working capital days sit, bring it to us as a launch partner.