WIP & Retainage in Construction Bookkeeping: Roll-Forward & Tie-Outs

Work-in-progress (WIP) and retainage drive job profitability and cash. We run a construction bookkeeping process that rolls WIP forward monthly, aligns percent-complete to job costs, and ties retainage receivable/payable to actual invoices and subs. In QuickBooks or Xero, we standardize items/cost codes, reconcile every bank/credit/loan account to statements, and produce a CPA-reviewed reporting pack with a period-lock recommendation—so your WIP schedule matches your job P&L and GL, not a separate spreadsheet.

The WIP Method (RBO Standard)

Step 1

Establish

cost-to-date and budget at job/code level

Step 2

Percent-complete

revenue recognition logic (as applicable)

Step 3

Roll-forward columns

Beg WIP, + Costs, +/- Adj, = End WIP

Step 4

Owner retainage

track receivable and releases

Step 5

Sub retainage

pay apps and releases, mirrored in AP

Reports We Deliver

  • tick WIP schedule with cost-to-complete and margin at complete
  • tick Retainage receivable/payable lists with release history
  • tick Job P&L by cost code that ties to the GL

CPA-reviewed and tailored for the construction industry

Get a Construction WIP & Retainage Quote

Frequently Asked Questions

Not always. Many contractors use completed-contract. We’ll align WIP reporting to your revenue method and lender/bonding requirements.

Separate AR/AP retainage ledgers; releases post against the right job/code and tie to bank statements.