Check a WAWF invoice or cost voucher before you submit it.

The government bounces invoices for reasons it never explains. Type the fields you’d type into WAWF, and Debenda checks them against the government’s own regulations and guides. Every finding cites its source, and nothing you type leaves this page.

or enter your own Free, no signup.

One finding from the sample voucher

Worksheet

Type what you’d type into WAWF. Nothing uploads. The checks run in your browser.

Part IThe contract

Contract numberCopy it from page 1 of the contract, without the dashes, like N6893626C0142
Delivery orderLeave it blank if there isn’t one
Contract type
Document type
Contracting agent
Period of performanceFrom
To
SAM registration expires

                We’re a small business
                

Part IIRouting

Copy each code from the 252.232-7006 table in your contract.

Pay Office DoDAACBox 15

Pay systemFrom your Pay DoDAAC

Admin DoDAAC

DCAA Auditor DoDAAC

Service Approver / Acceptor DoDAAC

LPO DoDAACNavy / One Pay

Part IIIThis voucher

Voucher number
Invoice number
Shipment number
CLIN / SLIN billed
Amount of this document$
Service period this voucher coversFrom
To
Numbers already used on this contractSeparated by spaces, like SBR0001 SBR0002

                This is the final document
                

                A final invoice already exists on this contract
                

                This continues the base contract’s number sequence on a delivery order
                
Has the deliverable shipped, or the milestone been accepted?

Part IVCosts and fee

Cumulative billed before this voucher$
Cumulative billed after this voucher$
Funded amount$
Total fixed fee$
Fee billed to date$
Provisional billing ratesThe package year, like 2026
Days since the last voucher
Is 52.232-25 Alternate I on the clause list?

                SF 1035-equivalent cost detail is attachedCurrent and cumulative costs by element, indirects at established rates, and the fee line
                

Part IVProper-invoice elements

Uncheck anything your invoice is missing.

Findings

Work out the Prompt Payment interest on a late payment.

When the government pays a proper, accepted invoice late, it owes you interest automatically. This works it out to the cent, the way 5 CFR 1315.10 does.

The invoice

1Invoice type
2Invoice amount$
3Billing office received itYour WAWF submit date
4Acceptance dateIf known
5Delivery dateFor the day-7 constructive rule
6Payment dateBlank means still unpaid, computed to today

Interest statement

Work out the cash you’d have tied up across a shutdown.

The current continuing resolution funds the government through . Put in your own figures, then run the checklist.

Your figures

Replace each line with your own.

1Invoices submitted but not yet accepted$
2Monthly government billing$
3Lapse length to modelFY26 precedent: 43 daysdays
4Funding increments expected in the window$
5Cash on hand$

Cash at risk

The pre-cliff checklist

Run it about two weeks before the deadline, around .

Estimate what bounced invoices cost you in a year.

A bounced invoice costs weeks of bridging cash you already earned. When the government pays late, the interest is owed to you automatically, whether or not anyone tells you the number (5 CFR 1315.10(b)(2)).

Your invoicing

Replace each line with your own.

1Monthly government invoicing$
2Invoices per month
3Your rejection or rework rateESTIMATE. Adjust it to your own history.%
4Average days lost per rejectiondays
5How you bridge the gap

The estimate

Your data

Debenda works from the fields you type. It doesn’t take contract documents or uploads, and it doesn’t store PIEE credentials. Your CUI perimeter doesn’t move.

Sources

Each finding names the FAR or DFARS clause, PIEE guide, or DFAS document it comes from. Rules built on practice instead of regulation say so. Found an error? Email nadav@debenda.com.

Every rule, with its citation How this stays accurate

You submit

Debenda prepares and you submit. Nothing goes to the government from Debenda.

What Debenda will never tell you

We never say “approved for payment.” Only the government approves payment. We tell you what the rules say, what historically gets bounced, and what interest you’re owed, with the citation attached.