What Is TAC in Weed? (Total Active Cannabinoids)
Quick answer: TAC stands for Total Active Cannabinoids, the combined total of all the active cannabinoids in a cannabis product (THC, CBD, CBG, CBN and others), not just THC. It appears on lab labels as a percentage and gives a fuller picture of a strain’s potency and its ‘entourage’ potential than THC alone. Because it is a sum, TAC is always equal to or higher than the THC figure. A high TAC means a cannabinoid-rich product.
If you have ever studied a cannabis lab label, you have probably seen ‘TAC’ alongside THC and wondered what it means. TAC stands for Total Active Cannabinoids, and it is simply the sum of all the active cannabinoids a product contains, THC, CBD, CBG, CBN and the rest, expressed as a percentage. Where the THC figure tells you only about the main intoxicating compound, TAC captures the whole cannabinoid picture.
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Fat Bastard
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THC | 30% - 38% (High) |
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Type | Feminized |
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Yield | High |
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Phenotype | 50% Indica / 50% Sativa |
Fat Bastard Auto
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THC | 30% - 38% (High) |
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Type | Autoflowering |
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Yield | High |
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Phenotype | 50% Indica / 50% Sativa |
That matters because cannabis effects come from more than THC alone: other cannabinoids (and terpenes) interact in what is often called the entourage effect, shaping the overall experience. So TAC is a useful, more complete potency figure. Below we explain what TAC does, how it differs from THC, and how to use it when choosing cannabis.
| TAC | THC | |
|---|---|---|
| Stands for | Total Active Cannabinoids | Tetrahydrocannabinol |
| Measures | All active cannabinoids combined (THC, CBD, CBG, CBN…) | Just the main psychoactive cannabinoid |
| Tells you | The full potency and entourage potential | How intoxicating it is |
| Always higher? | Yes, TAC is the sum, so it is equal to or higher than THC alone | A subset of TAC |
What TAC Tells You
TAC’s job is to tell you the total cannabinoid strength of a product. By adding up every active cannabinoid, not just THC, it gives a more honest measure of overall potency and of how ‘full-spectrum’ a product is. Two products could show the same THC percentage but different TAC values, the one with the higher TAC carries more additional cannabinoids like CBD, CBG or CBN, which can shape and round out the effect.
This is why TAC is increasingly used on labels and valued by informed consumers: it reflects the entourage effect, the idea that cannabinoids and terpenes work together, better than a lone THC number. A high-TAC strain is cannabinoid-rich overall, while a product with TAC close to its THC figure is dominated by THC with little else. Neither is ‘better’, it depends on the experience you want.
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TAC vs THC: What’s the Difference?
The simplest way to think about it: THC is one cannabinoid; TAC is all of them added together. THC (tetrahydrocannabinol) is the main psychoactive compound, the one responsible for the ‘high’, so the THC percentage tells you how intoxicating a product is likely to be. TAC, being the sum of THC plus CBD, CBG, CBN and others, tells you the total cannabinoid load.
Because TAC includes THC, it is always equal to or higher than the THC figure, never lower. If you mainly care about how strong the high is, look at THC; if you want the full potency and entourage picture, look at TAC. Note that labels sometimes report THCA separately, which converts to THC when heated, see our guides on high THCA percentages and the THCA to THC conversion.
Does TAC Get You High?
A common question is whether a high TAC means a stronger high. Not exactly. TAC itself is not a single compound, so it does not ‘get you high’ on its own, the intoxication still comes mainly from THC. A product can have a high TAC because it is rich in non-intoxicating cannabinoids like CBD or CBG, which would not increase the high and might even soften it.
So to judge how intoxicating something is, check the THC (or THCA) figure within the TAC, not the TAC total. Use TAC to understand the overall cannabinoid richness and entourage potential, and THC to gauge the strength of the high. Reading both together gives you the clearest idea of what a product will actually do.
How to Use TAC When Choosing Cannabis
When you are comparing products, read TAC and THC together rather than fixating on one number. Use the THC (or THCA) figure to judge how intoxicating something will be, and the TAC to see how cannabinoid-rich and ‘full-spectrum’ it is. Two flowers with identical THC can offer different experiences if one has a much higher TAC, meaning more CBD, CBG, CBN and other cannabinoids rounding out the effect.
This is especially useful if you want more than a straight THC hit, for example a more balanced, nuanced or mellow experience, where a higher TAC with supporting cannabinoids can matter. It also helps you spot value and quality: a rich cannabinoid profile often signals well-grown, well-preserved flower. As always, terpenes and your own tolerance shape the final experience too, so treat TAC as one helpful spec among several, not the whole story.
FAQs
What is TAC in weed?
TAC stands for Total Active Cannabinoids, the combined total of all active cannabinoids in a cannabis product, THC, CBD, CBG, CBN and others, shown as a percentage on lab labels. It gives a fuller measure of potency and entourage potential than THC alone, and is always equal to or higher than the THC figure.
What is the difference between TAC and THC?
THC is a single cannabinoid, the main psychoactive one; TAC is the sum of all active cannabinoids combined. THC tells you how intoxicating a product is; TAC tells you its total cannabinoid load and entourage potential. Because TAC includes THC, it is always equal to or higher than the THC percentage.
Does a high TAC get you higher?
Not necessarily. TAC is the total of all cannabinoids, and the high comes mainly from THC. A product can have a high TAC because it is rich in non-intoxicating cannabinoids like CBD or CBG, which will not increase the high. To judge intensity, check the THC figure within the TAC, not the TAC total.
Is a higher TAC better?
Not automatically, it depends on what you want. A higher TAC means a richer total cannabinoid profile, which can give a fuller, more rounded experience, but the intensity of the high still comes mainly from THC. Read TAC and THC together: THC for potency of the high, TAC for overall cannabinoid richness. Terpenes and tolerance matter too.
