The measurement, documentation and arithmetic errors that send running account bills back, and the billing discipline that gets them certified first time.

A rejected RA bill is not a paperwork problem. It is thirty to sixty days of working capital deferred, on a bill you have already funded with material, wages and plant. Contractors who bill government departments learn quickly that certification is not a formality — the executive engineer's office rejects bills for a consistent, predictable set of reasons, almost all of which are avoidable.

Measurement Errors That Fail Check-Measurement

The measurement book is the foundation of the bill, and it is where most rejections originate.

Measurements not recorded in the prescribed MB format. Entries must follow the department's format with the standard columns, in ink, with corrections attested rather than overwritten. A neat spreadsheet printout is not a substitute unless the department has accepted digital MBs.
Unsigned or un-check-measured entries. Work must be recorded by the authorised person and check-measured by the departmental officer at the prescribed percentage. Entries lacking the check-measurement signature will not be certified.
Quantities exceeding the BOQ without sanction. Executing more than the tendered quantity is common and legitimate, but billing it before the deviation statement is sanctioned is not. The excess is held until the variation is approved.
Hidden work billed without a record. Foundation depths, reinforcement, buried services — anything that gets covered must be measured and recorded before it is concealed, with photographs and joint measurement. Once it is buried, the record is the only evidence, and its absence is your loss.

Documentation Gaps

The bill travels with a file, and an incomplete file stops at the first desk.

Missing test results. Cube test reports, steel test certificates, compaction results and material approvals for the period being billed. Departments increasingly refuse to certify quantities whose quality evidence is not in the file.
No deviation statement. Where quantities differ from the BOQ, a deviation statement showing tendered versus executed quantities, with reasons and sanction status, has to accompany the bill.
Unsupported extra items. Items outside the BOQ need a sanctioned rate. Billing an extra item at your own assessed rate before the rate is approved guarantees the item is struck out.
Absent hindrance register entries. Where you intend to claim EOT or damages later, the contemporaneous record must exist now. A hindrance raised for the first time at final bill stage rarely succeeds.

Arithmetic and Cumulative Errors

RA bills are cumulative: each bill restates the total quantity executed to date and deducts everything certified previously. That structure is unforgiving in a specific way — an error in RA-3 does not stay in RA-3. It propagates into every subsequent bill, and when the department finds it at RA-7, the correction reaches back through four bills.

The recurring failures are mechanical: the previous bill's certified quantities transcribed incorrectly, deductions for advances or retention omitted or double-applied, and rate columns that do not match the accepted tender rate for the item. Each is trivial individually and each is a rejection.

This is precisely the risk that manual re-entry creates. When the certified quantities live in one system and the bill is retyped in another, transcription error is not a possibility but a certainty over enough cycles. Generating the bill directly from the same item-level BOQ that holds the certified quantities removes the step where these errors are introduced — which is what BOQ & billing is built to do.

GST Errors on Works Contracts

Works contract GST carries its own rejection set: the wrong rate applied for the category of work, CGST and SGST used where IGST applies on an inter-state supply, HSN or SAC codes missing, or the GSTIN on the invoice not matching the registration under which the contract was awarded. Departments deducting TDS under GST also expect the bill to reflect it correctly. Our guide to GST on works contracts covers the treatment in detail.

Statutory Deductions and Recoveries

Bills are also checked for the deductions the contract requires: income tax TDS, GST TDS, labour cess where applicable, and recovery of mobilisation advance and secured advance per the agreed schedule. A bill that ignores a scheduled recovery is not generous to the contractor — it is returned.

Getting Certified First Time

The contractors who get bills through cleanly share a few habits. They record measurements jointly and at the time, not retrospectively. They keep the test-result file current with the billing period rather than assembling it at bill time. They reconcile the cumulative figures against the last certified bill before submission, not after rejection. And they raise deviations and extra items for sanction as the work happens, so approval arrives before the bill that needs it.

A digital measurement record makes most of this automatic — see digitising the measurement book for how the MB-to-bill path shortens when the measurement is captured once, at source.

A bill certified first time is worth more than a bill argued successfully. The margin is the same; the cash arrives a month earlier.

Book a ProjectSathi demo to see certified quantities flow into a GST-correct RA bill without retyping.