Calculate and apply retentions on construction payments with less manual work. Generate accurate payment certificates from the same payment workflow.
Apply retention against contractor payments without spreadsheets or manual calculations. Mastt tracks retained amounts across all progress payments and automatically produces payment certificates from your contract data.
Enter retention directly in the payment form and let Mastt calculate the net payment amount for you. Teams can enter retention as a percentage or a dollar amount, which speeds up payment processing and reduces manual errors.
🧮 Add retention in seconds during payment entry.
💲 Choose a dollar amount or percentage to match the contract.
✅ Send forward payment values that are easier to trust and verify.
Create professional payment certificates directly from recorded payments. Mastt automatically includes retainage deductions in the certificate breakdown, so payment documentation stays accurate and consistent.
📄 Turn approved payment data into payment certificates faster.
⚡ Cut document prep time during payment reviews.
📁 Keep schedules, certificates, and payment records aligned.
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What is construction retainage software?
Construction retainage software is a tool that helps teams calculate, track, and manage retained amounts on construction payments. It keeps retained amounts visible in the payment workflow and supports payment documentation such as payment certificates.
Who is retention management software for?
Retention management software is useful for project managers, contract administrators, cost consultants, and commercial teams managing construction payments. It helps teams control retained amounts and reduce manual payment admin work.
How does Mastt apply retentions to payments?
Mastt applies retentions at the payment level through the payment form. Users can enter a retained amount as a dollar value in Retained This Payment or use a percentage in the Percentage field.
Can Mastt calculate retainage as a percentage or dollar amount?
Yes. Mastt supports both payment methods, giving teams flexibility depending on the contract and payment. Percentage retentions are calculated on contract line items only, while dollar amounts can be entered directly when an exact retained amount is needed.
Can Mastt apply retention to change orders?
Yes, through the dollar amount method. Percentage retention does not apply to change orders, so teams need to enter the retained amount manually in Retained This Payment when retaining funds on changed values.
How do retentions appear in Mastt payment certificates?
When payment certificates or schedules are exported, Mastt deducts retention from the gross payment total first, then calculates tax on the remaining amount, and then shows the final payment amount. The exported certificate shows the breakdown so teams can review gross amount, retentions deducted, subtotal, tax, and final payment amount.
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