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Rochemère
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Indicative progress statement calculator

Estimate period work, VAT, contractual retention and net amount in DZD.

Free · No account · Instant result

Inputs

Example item 1

The retention rate is an editable example: use your contract’s rate.

Indicative calculation from your inputs. Check contract terms and applicable rules before use.

Estimate

DZD 56,525.00

Amount excl. tax
DZD 50,000.00
VAT
DZD 9,500.00
Retention
DZD 2,975.00
Stamp duty
DZD 0.00

This estimate excludes price revision, penalties, advance recovery and retention release. It is not a certified statement.

A useful number to share with your manager

Add a project name and copy a clear summary for your site manager, project lead or director.

The quantity is clear. What comes next?

Rochemère Systems connects your BOQ, purchasing, budget and actual costs in one project. Share this result with your team and explore a guided pilot.

Calculation reference

Retention is editable to match your contract; the result is not certification.

Worked example

20 previous units and 30 current at 5,000 DZD: period 50,000 DZD excluding tax; VAT 19%, retention 5% gross → net 56,525 DZD.

Things to check

Do not confuse period quantities with cumulative quantities.

Content reviewed on 04/10/2026

METHOD

An estimate you can verify

Current quantities are cumulative and cannot be lower than previous quantities.

FAQ

Calculation reference

Retention is editable to match your contract; the result is not certification.

Things to check

Do not confuse period quantities with cumulative quantities.

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