Key takeaway: A SR&ED investment tax credit you can't use this year doesn't expire — you can carry it back 3 tax years or forward 20. But the credit isn't permanently yours the moment it's earned. If you later sell, or start using commercially, equipment or materials built into a product whose cost you claimed for SR&ED, the CRA can claw part of that credit straight back onto your tax bill through ITC recapture. Most founders learn about carryforward from their accountant and learn about recapture from a surprise year-end adjustment. This post covers both, using only what the CRA's own investment tax credit policy actually says.
Getting a SR&ED credit approved is only half the story. What happens to it afterward — whether it sits unused, gets carried into a better year, or gets partially reversed — depends on two mechanics almost nobody explains until they matter: carryforward and recapture. Most SR&ED content stops at "here's how to file"; this one picks up where that content ends.
Here's how both actually work, sourced to the CRA's own investment tax credit guidance — plus the part most guides skip, which is what happens when carryforward rules collide with the newly-restored capital expenditure rules from 2026.
What happens to a SR&ED credit you can't use this year
An unused SR&ED investment tax credit isn't lost — you can carry it back up to 3 tax years or forward up to 20. That's the CRA's own window.
The order of operations matters, though. The ITC is applied in a fixed sequence: first it reduces the income tax you owe for the current year, then whatever's left over may be refunded (if you're a CCPC or individual eligible for the refundable rate), and only the amount still remaining after both of those steps becomes available to carry back or forward. You don't get to choose to bank a credit for a future year instead of using it now — the CRA nets it against this year's tax bill first, whether you want that or not.
For a profitable company already paying meaningful corporate tax, that first step often absorbs most of the credit before refundability even becomes relevant. For a pre-revenue startup with no tax payable, the sequence skips straight to the refund, which is why refundability dominates most of the conversation and carryforward barely comes up — until the company turns profitable, stops qualifying for the refundable rate, or hits its expenditure limit and starts earning ITCs at the 15% basic rate on the excess, of which at most 40% is refundable.
Why carryforward matters more for some ITCs than others
Not every dollar of SR&ED credit has the same odds of needing carryforward in the first place — it depends on refundability, and refundability depends on claimant type. A qualifying CCPC gets its 35%-rate credit on current expenditures refunded at 100% up to the expenditure limit, so most of that credit converts to cash immediately regardless of tax payable, and carryforward barely enters the picture. An excluded corporation earning the same 35% rate only gets 40% of it refunded, meaning a much larger share of the credit depends on having tax payable to absorb it — and it's that non-refunded remainder that's most likely to end up carried forward if the company isn't profitable that year.
Capital expenditures follow a stricter version of the same split: per the CRA's rate table, the ITC earned on capital expenditures is at most 40% refundable, and for corporations outside the refundable categories it is not refundable at all, so the rest rides on tax payable or carryforward. A company doing heavy capital-equipment SR&ED work should expect a meaningfully larger fraction of its credit to depend on carryforward mechanics than a company claiming purely on salaries.
Carryback vs. carryforward: which one actually helps
Carryback is usually the better deal, when it's available, because it turns an unused credit into cash now instead of a deduction you might use someday. If you had taxable income in one of the past 3 years and paid tax on it, carrying an unused ITC back to that year generates an immediate refund of tax you already paid — no waiting required. Carryforward, by contrast, is a bet on a future year where you'll actually owe enough tax for the credit to matter.
That's our read, not a CRA ranking — the agency doesn't tell you which to pick, and the right answer depends on your specific tax history. But the logic holds for most startups: a company that was marginally profitable two years ago and isn't now should be checking whether a carryback claim is sitting on the table before defaulting to forward.
There's a real cost to letting credits carry forward indefinitely, too, even with 20 years of room. A credit earned this year and finally used in year 15 is worth less in real terms than the same dollar amount used today — inflation and the time value of money both work against you. Twenty years is a safety net, not a strategy.
Two scenarios, worked through with numbers
Take a hypothetical company — call it Fieldworks, a fictional hardware startup we're using to illustrate the mechanics, not a real business. Fieldworks earned $180,000 in SR&ED ITCs on its non-refundable, above-the-limit expenditures two years ago, but had zero tax payable that year, so the whole $180,000 sat unused. This year Fieldworks is profitable and owes $95,000 in corporate tax. Carryforward lets Fieldworks apply $95,000 of that old credit against this year's bill, cutting it to zero, with $85,000 left to carry forward again into future years.
Now flip the timing. Say Fieldworks instead earns $50,000 in unused credit this year, but paid $40,000 in corporate tax the year before. Carryback lets Fieldworks apply that $50,000 against last year's return and get up to $40,000 of already-paid tax refunded now, rather than waiting for a future profitable year to use the credit. That's the practical difference: carryforward banks a credit for later, carryback turns it into cash against tax you've already written a cheque for.
What SR&ED ITC recapture actually is
ITC recapture is the CRA taking back part of a SR&ED credit you already earned, triggered when you sell or start using commercially the same property whose cost you claimed. It shows up as an addition to your income tax payable in the year the sale or conversion happens — not as an audit finding, not as a reassessment of the original claim, just a line item on that year's return.
The mechanism exists because SR&ED tax incentives are meant to apply to the net cost of what you spent on research, not the gross cost. If you bought a $200,000 piece of lab equipment, claimed SR&ED on it, and then sold it for $120,000, your real net cost was closer to $80,000, so the credit earned on the full $200,000 was too generous. Under the CRA's recapture policy, the amount added back is the lesser of the credit you earned on that property and your original credit rate times the sale price. The CRA states it plainly: recapture "is intended to only allow you to claim tax incentives on the net cost of SR&ED expenditures." Since nobody can know the resale value up front, the credit gets calculated on the full cost first and corrected later, if and when a sale happens.
What triggers a recapture, specifically
Recapture is triggered by selling property, or converting it from SR&ED use to commercial use, when its cost was previously claimed as a qualified SR&ED expenditure. Per the CRA's investment tax credit guidance, it covers two kinds of property: materials transformed in SR&ED (for example, parts built into a prototype that is later sold), in any year, and capital property acquired before 2014 or after December 15, 2024. Our SR&ED materials guide covers the materials side in detail; this section is about equipment.
That second window is the one worth paying attention to right now. Capital expenditures were excluded from SR&ED entirely for a decade — restored only as part of the Bill C-15 changes that took effect in 2026, for capital property acquired after December 15, 2024. Any company claiming SR&ED on lab hardware, servers, or specialized equipment bought since that date is claiming under rules that come paired with recapture exposure if that equipment is later sold or repurposed. Companies that stopped thinking about capital SR&ED during the years it wasn't claimable need to re-learn this mechanic, not assume it doesn't apply to them.
What a recapture actually looks like on the return
Different hypothetical, same rules. Call this one Coastal Sensors — another fictional company, this time one that bought a $150,000 environmental test chamber in early 2025, used it exclusively on a claimed SR&ED project, and earned a 35% ITC — $52,500 — on that purchase as a capital expenditure. Eighteen months later the project wraps, and Coastal Sensors sells the chamber to another lab for $90,000, since the equipment still has resale value and nobody on the team needs it anymore.
That sale is what triggers recapture. Coastal Sensors doesn't get to keep the full $52,500 credit as if the equipment cost had simply vanished — the CRA's net-cost logic says the true cost of that chamber, once the $90,000 sale price is accounted for, was much lower than $150,000. The recapture is the lesser of two numbers: the $52,500 credit it earned on the chamber, or 35% of the $90,000 sale price, which is $31,500. So $31,500 is added to the company's income tax payable for the year of the sale, and it keeps $21,000 of the original credit. It shows up as a number on Schedule T2SCH31 for that tax year, not as a reopened claim from 2025 and not as a CRA-initiated review — the accountant reports it the same way they'd report any other disposition of claimed capital property.
Who this actually matters to
Software-only claimants can mostly skip the recapture half of this post — SR&ED work built entirely on salaries, contractors, and cloud infrastructure rarely involves capital property changing hands later, so there's nothing to trigger it. Carryforward and carryback still apply, whatever generated the credit. Recapture doesn't.
It matters most to companies with physical R&D: hardware startups, cleantech, biotech and life sciences, anyone running a lab, and manufacturing-adjacent teams building prototypes or test rigs. If your SR&ED claim has ever included equipment, machinery, or specialized instruments as capital expenditures, or materials built into a prototype you later sell, that property carries a tax tail for as long as you own it. Selling it, donating it, or converting it to non-SR&ED commercial use are all events worth checking against your claim history before they happen, not after the return is already filed.
Recapture doesn't touch your original claim
One thing worth being direct about: recapture is not a penalty, and it's not evidence your original T661 was wrong. It's a scheduled adjustment built into the credit's design from the start, the same way depreciation recapture works on capital cost allowance elsewhere in the Income Tax Act. The CRA isn't reopening your file or questioning your documentation — it's applying a formula that was always going to apply once the asset's disposition became known.
That distinction matters because the two situations call for completely different responses. A CRA review of your original claim is about whether the work qualified and whether you can prove it. Recapture is arithmetic — you report it yourself, on Form T2SCH31 for corporations or Form T2038-IND for individuals, the same forms used to claim the ITC in the first place. There's no defense to mount because there's no dispute; you're just closing the loop on a number the credit design always intended to revisit.
Planning around it instead of getting surprised by it
The practical fix is simple: know, at the time you sell or repurpose equipment, whether its cost was ever claimed for SR&ED, and budget for the recapture before the sale closes rather than discovering it at tax time. A company that sells a decommissioned test rig for scrap value six months after finishing a project should flag that sale to whoever prepares the return, the same way they'd flag any other capital disposition. It's a small amount of coordination that turns a surprise tax bill into an expected line item.
This is also where continuous documentation earns its keep beyond the original claim. If your SR&ED records tie specific capital purchases to specific projects and dates as the work happens — rather than getting reconstructed from memory when a claim is due — figuring out what triggers recapture later is a lookup, not an investigation. Finance teams that inherit a SR&ED history from a founder who's since left the company feel this most: without a record of which purchases were ever claimed, every equipment sale becomes a research project of its own.
That's the same discipline Glauq applies to claims generally: evidence captured in the tools your team already uses, reviewed by an independent SR&ED expert who signs off on what's filed, so nothing about your claim — including what happens to it years later — depends on someone's memory of a purchase from three fiscal years ago.
Frequently asked questions
How long can I carry forward an unused SR&ED tax credit? Up to 20 years. Per the CRA's investment tax credit guidance, unused ITC remaining after it's applied against tax payable and any refund is issued can be carried forward up to 20 tax years, or carried back up to 3.
Can I carry an SR&ED credit back instead of forward? Yes. The same CRA policy allows carryback up to 3 tax years, which can generate an immediate refund of tax already paid in a profitable prior year rather than waiting for a future year with enough tax payable to use the credit.
What is SR&ED ITC recapture? Recapture is an addition to your income tax payable, triggered when you sell or convert to commercial use property whose cost was previously claimed as a qualified SR&ED expenditure. It applies to materials transformed in SR&ED, and to capital property acquired before 2014 or after December 15, 2024. It is reported on the same forms used to claim the original ITC — T2SCH31 for corporations, T2038-IND for individuals.
Does recapture mean my original SR&ED claim was wrong? No. Recapture is a scheduled adjustment tied to the property's later sale or conversion, not a reassessment of whether the original claimed work qualified. It exists so the credit ultimately reflects the net cost of the property, not the full purchase price, once its eventual value is known.
Does recapture apply to capital equipment I bought before the 2026 changes? Only if it was bought before 2014 or after December 15, 2024, the two windows during which capital property was SR&ED-eligible. Capital expenditures made between 2014 and December 15, 2024 were not eligible for SR&ED at all, so they're outside the recapture rules by the same logic: nothing was claimed on them to begin with.
Where do I report an SR&ED ITC recapture? On Form T2SCH31 (corporations) or Form T2038-IND (individuals) — the same investment tax credit forms used to originally claim the SR&ED credit, filed for the tax year the sale or conversion happens in.
Carryforward means an unused credit isn't wasted. Recapture means an old claim isn't necessarily finished. Track both, and the tax side of SR&ED stops producing surprises in either direction.
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