https://blog.novatax.cl/en/tags/refund/Recent content in Refund on NovaTax BlogHugoen-usThu, 24 Sep 2026 00:00:00 +0000https://blog.novatax.cl/en/rectificar-declaraciones-ley-id/Thu, 24 Sep 2026 00:00:00 +0000https://blog.novatax.cl/en/rectificar-declaraciones-ley-id/<p>One advantage of the <a href="https://blog.novatax.cl/en/manifestacion-de-intencion/">notice of intent</a> is that the <a href="https://blog.novatax.cl/en/ley-id-chile/">R&amp;D Law</a> credit applies <strong>retroactively</strong>. But that retroactivity has a practical consequence: you may need to <strong>amend prior years&rsquo; tax returns</strong>.</p> <h2 id="why-you-need-to-amend">Why you need to amend</h2> <p>With a notice of intent, a company can start spending before the project is certified. But the process is long:</p> <ul> <li>Up to <strong>18 months</strong> to submit the formal certification application.</li> <li>Up to <strong>180 calendar days</strong> for Corfo to certify.</li> </ul> <p>By then, the company has already filed taxes for one or more years in which it incurred project costs, without being able to use the 35% credit yet.</p>