The contract under way

What happens between signing and the return of the guarantee: when you can ask for the price review, how much each day of delay costs, how long they have to pay you and when you get the guarantee back. Enter the details of your contract.

Your contractType of contractPrice excluding VAT (€)FormalisationThe day it was signed.End of the performance periodDelivery or actual endIf it has already ended.Acceptance or approvalIf you already have it: the guarantee period counts from it.Performed to date (€ excluding VAT)To know whether you reach the 20 % of the price review.Guarantee period (months)It is in the specifications.Final guarantee lodged (€)It is usually 5 % of the price excluding VAT (art. 107.1); it appears in the letter asking for its return.Days of delay, if any The specifications include a price review formula

Calculate the review

Si el pliego trae una fórmula tipo (obras o suministro de fabricación), elígela. Los índices los elabora el INE, los aprueba el Ministerio de Hacienda y salen en el BOE por trimestres, unos meses después: los que ya están publicados los rellenamos nosotros (hasta marzo de 2026); si el mes aún no ha salido, escríbelos tú cuando salgan. Las Órdenes, en Hacienda, and all the series at the INE. Origen de los datos: Boletín Oficial del Estado.

Standard formula in the specificationsEnd of the bid submission periodIf the signing came more than three months later, the origin is the day those three months are up (art. 103.4).Month under reviewMonth and year.Performed that month with the right to review (€ excluding VAT)Without the first 20 % or what falls in the first year (art. 103.5).

Choose the formula and you will see only its materials.

A · AluminioOrigin indexIndex for the month

B · Materiales bituminososOrigin indexIndex for the month

C · CementoOrigin indexIndex for the month

E · EnergíaOrigin indexIndex for the month

F · Focos y luminariasOrigin indexIndex for the month

L · Materiales cerámicosOrigin indexIndex for the month

M · MaderaOrigin indexIndex for the month

O · PlantasOrigin indexIndex for the month

P · Productos plásticosOrigin indexIndex for the month

Q · Productos químicosOrigin indexIndex for the month

R · Áridos y rocasOrigin indexIndex for the month

S · Materiales siderúrgicosOrigin indexIndex for the month

T · Materiales electrónicosOrigin indexIndex for the month

U · CobreOrigin indexIndex for the month

V · VidrioOrigin indexIndex for the month

X · Materiales explosivosOrigin indexIndex for the month

D · Cabezas explosivasOrigin indexIndex for the month

H · Materiales textilesOrigin indexIndex for the month

J · Materiales para fabricación de calzadoOrigin indexIndex for the month

W · Materiales minerales no metálicosOrigin indexIndex for the month

Y · Materiales y equipos eléctricosOrigin indexIndex for the month

Certificates and payments

Note down each certificate or invoice: we give you when they have to approve it and pay it, the interest if they are late and, if you have chosen a formula, its share of the price review with the BOE indices. Only the amount and the delivery date are needed; the month performed is used for the review.

VAT applied (%)Performed before these certificates (€ excluding VAT)To know whether you have already passed the first 20 %.

Certificate 1Month performedAmount excluding VAT (€)DeliveryInvoice submittedApproved onPaid on

Certificate 2Month performedAmount excluding VAT (€)DeliveryInvoice submittedApproved onPaid on

Certificate 3Month performedAmount excluding VAT (€)DeliveryInvoice submittedApproved onPaid on

More than 3? Fill them in and calculate again: another empty one will appear, up to 12.

General rule of Act 9/2017, on Public Sector Contracts (arts. 103, 104, 111, 193, 195, 198, 200, 204 to 206, 210, 216 and 217), of Act 3/2004, on late payment, and of the standard formulas of Royal Decree 1359/2011. The specifications rule where the law allows it, and your region may have shortened the payment periods. We do not store anything you write here.