SF 1034/1035
Public Voucher for Purchases and Services Other Than Personal
What It Is
SF 1034 is the public voucher — the billing document used to claim payment on cost-reimbursement contracts and other awards that bill by voucher rather than a commercial invoice. SF 1035 is its continuation sheet for line-item detail. On a cost-type contract you typically submit interim public vouchers for allowable costs as incurred, often through the agency's electronic invoicing system (e.g., DoD's Wide Area Workflow / iRAPT). Fixed-price commercial work usually bills by ordinary invoice instead.
When You'll Use It
- Billing allowable costs on cost-reimbursement contracts as they're incurred.
- Interim and final vouchers on cost-type and certain T&M awards.
- Where the contract or agency requires voucher-based billing rather than a commercial invoice.
Who Completes It
The contractor prepares and submits the voucher (often electronically); it must reconcile to the contract's billing terms and the supporting cost records.
Key Blocks to Get Right
| Block / Section | What It Captures |
|---|---|
| Contract & voucher identification | The contract number, voucher number, and period — vouchers are sequential and must tie to the contract's billing instructions. |
| Costs claimed | Direct costs, indirect (overhead/G&A) at the billing rates, and any fee — only allowable, allocable, and reasonable costs may be billed. |
| Certification | The contractor's certification that the amounts claimed are correct and proper under the contract terms. |
Common Pitfalls
- Billing indirect costs at provisional rates without later reconciling to final negotiated rates.
- Claiming unallowable costs (FAR Part 31), which can trigger penalties on a cost contract.
- Submitting vouchers out of sequence or outside the agency's electronic invoicing system, delaying payment.
Frequently Asked
When do I use SF 1034 instead of a regular invoice?
Public vouchers (SF 1034/1035) are used to bill costs on cost-reimbursement contracts and other voucher-based awards. Fixed-price commercial contracts typically bill with an ordinary commercial invoice. Check the contract's payment clause and billing instructions — many agencies also require electronic submission (for example, DoD's Wide Area Workflow).
What costs can I bill on a public voucher?
Only costs that are allowable, allocable, and reasonable under FAR Part 31 and the contract terms — direct costs, indirect costs at your billing rates, and any negotiated fee. Unallowable costs must be excluded, and provisional indirect rates are later reconciled to final rates, which can produce an adjustment up or down.
Primary Sources
Plain-English reference, not legal advice. Standard forms are periodically reissued and the FAR is amended for inflation and policy — always download the current edition from the GSA Forms Library and confirm requirements against the solicitation and your contracting officer before relying on it.
Change log (1)
- LaunchedPublished the federal contracting forms reference covering the standard forms an SDVOSB encounters when bidding and performing set-asides — SF 1449, SF 33, SF 18, SF 30, SF 1442, SF 330, SF 1408, SF 1413, the eSRS ISR (formerly SF 294), SF LLL, SF 1034/1035, and the SAM.gov representations & certifications (FAR 52.204-8) — each with a key-blocks table, filing pitfalls, FAQPage, DigitalDocument, Dataset, and BreadcrumbList structured data, primary-source FAR citations, and cross-links into the glossary, how-to guides, FAQ, and regulation explainers.