The fast-food add-on tax: what cheese, bacon and sauce cost in Canada
Verified August 6, 2026Updated September 1, 2026CAD, before taxGuide
Menu boards are built to show an attractive base price. The bill catches up at the customization screen, where a slice of cheese, two strips of bacon or one more tub of dipping sauce each carry a charge nobody quotes when they tell you what a burger costs.
Most chains do not print an add-on price list. They do something better for our purposes: they sell the same burger with and without the topping, which means the price of the topping is sitting in plain sight inside the menu ladder. Every figure on this page is that subtraction, taken from the verified price files behind this site's brand pages.
The finding that survives all of it: at Harvey's, a slice of cheese costs $0.40 on a junior burger and $0.80 on a full-size one. Same slice. The price is set by the sandwich you put it on.
What this compares, and what it doesn't
I did not stand at a kiosk pricing modifiers. I took each chain's own menu ladder and subtracted.
- Burger King prices the Whopper plain, with cheese, with bacon, and with both, so all three add-ons fall straight out of the list.
- Harvey's prices the Original and Angus burgers plain, with cheese, and with cheese and bacon, and prices its junior line the same way, which is how the two-tier pattern shows up.
- Sauce prices are published outright by four of the five chains.
Where a chain does not sell the same item both ways, there is no number to derive, so that chain is named in the text instead of taking up a row with nothing in it. A&W is the main gap: its menu does not offer a plain-and-with-cheese pair on any comparable burger, so I cannot tell you what A&W charges for cheese and I am not going to estimate it.
All prices are in Canadian dollars and exclude tax. Franchise operators set modifier pricing locally, so treat these as the pattern rather than a promise for your counter.
Extra dipping sauce, cheapest to dearest
These five are published prices, not derived ones. Four of them come from the cheapest fast food comparison, where the cheapest sauce on any menu is also the cheapest item on any menu.
| Chain | Extra dipping sauce | Notes |
|---|---|---|
 Burger King | $0.23 | BBQ, Buffalo, Honey Mustard, Ranch or Sweet & Sour |
 Tim Hortons | $0.25 | Any of eight sauces; the cheapest line item on the menu |
 Harvey's | $0.40 | Any of seven; also the cheapest item on the Harvey's menu |
 McDonald's | $0.49 | Nugget, Spicy Habanero or mayo-style packet |
 A&W | $0.50 | BBQ, Sweet N Sour, Jalapeno Ranch, Honey Mustard, Chipotle Mayo |
The spread is more than double from one end to the other, but the absolute numbers are small enough that sauce is rarely where an order goes wrong. Three extra sauces at A&W costs $1.50, which is still less than a small coffee.
Cheese and bacon: the two-tier pattern
Here is where the real money is, and where the ladder gives up something the chains do not advertise.
Cheese, where a chain sells the same burger with and without it:
| Chain | Burger line | Add cheese |
|---|---|---|
| Harvey's | Junior (Jr. Burger, Double Jr.) | +$0.40 |
| Harvey's | Full-size (Original, Angus) | +$0.80 |
| Burger King | Whopper | +$1.00 |
Bacon, the same way:
| Chain | Burger line | Add bacon |
|---|---|---|
| Harvey's | Junior (Jr. Burger, Double Jr.) | +$0.90 |
| Harvey's | Full-size (Original, Angus) | +$1.30 |
| Burger King | Value (Cheeseburger, Double Cheeseburger) | +$1.00 to +$1.30 |
| Burger King | Whopper | +$1.40 |
Three combinations are missing from those two tables and it is worth saying which. Burger King's value burgers arrive with cheese and have no cheeseless twin to subtract from, so there is no cheese price to derive there, only a bacon one. A&W and McDonald's sell neither pair in a comparable form, so neither appears in either table.
Read across the Harvey's rows and the pattern is exact rather than approximate. The Jr. Burger is $2.79 and the Jr. Cheeseburger $3.19; the Double Jr. Burger is $3.79 and the Double Jr. Cheeseburger $4.19. Both steps are $0.40. Move to the full-size line and the Original Burger at $6.79 becomes $7.59 with cheese, while the Angus at $7.69 becomes $8.49 — both steps $0.80, to the cent. Bacon does the same thing: $0.90 on the junior line, $1.30 on the full-size line, consistent on both burgers at both tiers.
Nothing about the slice changed between those two rows. What changed is the price of the burger it is going on, which tells you the topping is priced as a percentage of the ticket rather than as a cost recovery.
At Burger King, the Whopper ladder is cleanly additive: $7.99 plain, $8.99 with cheese, $9.39 with bacon, $10.39 with both. Cheese is $1.00, bacon is $1.40, and taking them together costs $2.40, so there is no discount for the pair. Down on the value line, the Cheeseburger at $2.99 becomes the Bacon Cheeseburger at $3.99, putting bacon at $1.00, while the Double Cheeseburger at $4.19 becomes the Bacon Double Cheeseburger at $5.49, putting it at $1.30. Those two do not agree with each other, so I have shown the range rather than picking one.
As a share of the sandwich, cheese runs from 11.8% of a Harvey's Original Burger up to 14.3% of a Jr. Burger. The cheaper the burger, the larger the bite the cheese takes, which is the same regressive shape that shows up everywhere a flat charge meets a variable price.
The side swap: usually free, occasionally not
Combo upgrade fees are not published as fees, so what follows is the difference between the à la carte side prices, which is the honest version of the same question.
| Chain | Regular fries | Onion rings | Difference |
|---|---|---|---|
| Burger King, small | $2.49 | $2.49 | $0.00 |
| Burger King, medium | $3.49 | $3.49 | $0.00 |
| Burger King, large | $3.99 | $3.99 | $0.00 |
| Harvey's, regular | $3.89 | $3.89 | $0.00 |
| Harvey's, large | $4.69 | $4.69 | $0.00 |
| A&W | $3.79 | $4.99 | +$1.20 |
Two of the three chains charge exactly nothing to take onion rings instead of fries, at every size. Burger King's own page makes the point plainly: onion rings and fries are priced identically at all three sizes, so the choice costs nothing. If a cashier quotes you an upgrade fee for rings at Burger King or Harvey's, the menu does not support it.
The genuinely priced upgrades are the ones that add a different food. Harvey's Frings, which splits the container between fries and rings, is $4.49 against $3.89 for either one alone, so not deciding costs $0.60. Burger King's equivalent, Have-sies, costs $0.20 more than either side by itself. Poutine is a bigger step: $5.99 at Harvey's and A&W against $3.89 and $3.79 for regular fries, and $5.79 at Burger King against $2.49 for a small.
How to keep the add-ons off your bill
- Buy the named build instead of building it. A Harvey's Jr. Cheeseburger is $3.19. A Jr. Burger plus cheese is also $3.19, so that one is a wash — but where a chain sells a named bacon-and-cheese version, it is usually cheaper than assembling the same sandwich from parts.
- Load up on the free toppings. Lettuce, tomato, pickles, raw and grilled onions, mustard, ketchup and mayonnaise carry no upcharge at the burger chains on this page. The paid additions are the dairy and the meat.
- Take the rings. At Burger King and Harvey's the swap is free at every size, and the rings are the more expensive product at A&W, which suggests what the chains think they are worth.
- Ask for sauce on the sandwich. A sauce applied to the bun by the kitchen is part of the build. A sauce handed to you in a plastic tub is a line item.
Frequently asked questions
How much does Burger King charge to add cheese?
$1.00 on a Whopper, taken from Burger King's own ladder: $7.99 plain, $8.99 with cheese. Bacon is $1.40, and both together cost $2.40, so the two toppings price additively with no discount for taking them at once.
Why does cheese cost twice as much on a bigger burger at Harvey's?
Because it is priced against the sandwich, not against the ingredient. Harvey's charges $0.40 to add cheese to a junior burger and $0.80 to add the same slice to an Original or Angus, and the step is exact on every burger in each tier.
What does A&W charge for extra cheese or bacon?
I do not know, and I would rather say so. A&W's menu does not sell a comparable burger both with and without cheese, so there is no subtraction to make. Its sauces are published at $0.50 each; the topping charges are not.
Is it cheaper to order a plain burger and add toppings?
Usually not, and never by much. Where a chain sells the assembled version, buying it as a named item is the safer default, because the toppings are priced at the counter as a percentage of the ticket rather than at cost.
Does swapping fries for onion rings cost extra?
Not at Burger King or Harvey's, where fries and onion rings carry identical prices at every size. At A&W, onion rings cost $4.99 against $3.79 for Russet Thick-Cut Fries, a real $1.20 difference.
Do delivery apps charge more for add-ons too?
Yes, because the markup applies to the whole menu rather than just the sandwiches. At the one Canadian chain where this site has matched delivery prices item by item, the multiplier was a flat 20.0%; the delivery markup guide has the figures.
Methodology and disclaimer
Add-on prices are derived by subtraction from the verified menu ladders on this site's Burger King, Harvey's, A&W, McDonald's and Tim Hortons pages, verified August 2026. Sauce prices are published figures. Where a chain does not sell an item both with and without a topping, it is left out of the table and named in the text rather than estimated. Franchise operators retain discretion over modifier pricing and condiment allocations, and prices exclude provincial sales taxes.
Froqel is an independent price guide. We are not affiliated with, endorsed by, or sponsored by any restaurant chain named here. All trademarks belong to their respective owners.