How do large working capital swings affect FCFF and what adjustments should I make?

Working capital changes can cause FCFF to swing dramatically even when the underlying business is stable. The key is distinguishing between temporary swings and structural shifts.

FCFF Formula:

FCFF = NI + NCC + Int(1-T) - FCInv - WCInv

Where WCInv = Change in non-cash working capital = ΔCurrent Assets (ex-cash) - ΔCurrent Liabilities

Example — Kingsfield Distribution (fictional):

Item	Year 1	Year 2	Year 3
Net income	$50M	$55M	$60M
Depreciation	$15M	$16M	$17M
CapEx	$20M	$22M	$24M
ΔInventory	+$5M	+$40M	-$25M
ΔReceivables	+$3M	+$15M	+$5M
ΔPayables	+$2M	+$8M	+$3M
WCInv	$6M	$47M	-$13M
FCFF	$39M	$2M	$66M

Notice FCFF drops to $2M in Year 2 due to the$47M working capital build (Kingsfield stocked up on inventory for a major contract). In Year 3, the inventory unwinds and FCFF spikes.

Normalization Approaches:

1. Multi-Year Average: Average WCInv over 3-5 years to smooth cyclical swings. Here, average WCInv = ($6M +$47M - $13M) / 3 =$13.3M per year.
2. WC-to-Revenue Ratio: Project WCInv as a percentage of revenue growth. If historically WC/Revenue is 12%, apply that to projected revenue increases.
3. Separate One-Time Items: If the Year 2 build is a one-time contract preparation, exclude it from the normalized projection but account for the cash impact in your explicit forecast period.

Normalized FCFF (using average WCInv = $13.3M):

• Year 1: $50M +$15M - $20M -$13.3M = $31.7M
• Year 2: $55M +$16M - $22M -$13.3M = $35.7M
• Year 3: $60M +$17M - $24M -$13.3M = $39.7M

Much smoother and more useful for valuation.

Exam Tip: CFA Level II vignettes often present volatile working capital to test whether you can normalize cash flows appropriately. Always state your normalization assumption explicitly.

Practice FCFF problems in our CFA Level II question bank.