How Much Should I Spend on Google Ads? (Budget Calculator)
Nobody can agree. One person says you need $5,000 a month minimum or you’re wasting your time. Another says they crushed it on $300. Every agency gives you a different number, and none of them explain how they got there. So you end up paralyzed — not because the information doesn’t exist, but because it comes at you from every direction.
Here’s what’s actually going on, and why I think most of the advice misses the real problem entirely.
The Short Answer
There’s a math answer and there’s the real answer, and they’re different.
The math answer: figure out your target cost per customer, back through your close rate to get a cost per lead, back through your landing page conversion rate to get a cost per click, multiply by clicks needed per day. That math exists and it works — what a good cost per lead looks like walks through it in detail if you want to run the numbers for your industry.
The real answer: pick an amount you can spend every month for a full year and not feel bad about. That’s your number.
I know that sounds like a dodge. It isn’t. It’s actually the most important thing I can tell you about Google Ads budgets, and I’ll explain why.
The Math Exists. That’s Not the Problem.
I trust you to do arithmetic. If you’re running a business, you know what a customer is worth. You know roughly what you close — or you can find out fast. The math isn’t complicated: work backwards from “what’s a customer worth to me” through the funnel and you’ll get a defensible daily budget number.
If you want to sit down and run through it — target customer value, close rate, what that implies for cost per lead, what CPCs actually look like in your market — that’s a worthwhile 20 minutes. Do it.
But here’s what I’ve watched happen, over and over, across enough ad accounts that I’ve stopped being surprised: people run the math, land on a budget, launch the campaign, and then — around week three or four — the money leaving the account every morning becomes unbearable, and they quit. The math was correct. The commitment wasn’t there.
Spending money on ads is a deeply emotional thing. It’s hard. It hurts to watch the money leave. That’s true at $30 a day and it’s true at $300 a day. The discomfort doesn’t scale away cleanly just because the numbers are bigger.
So: I’m not worried about your math skills. I’m worried about your commitment skills — whether you actually have the gut to run ads for long enough to find out if they work.
Why Commitment Is the Real Variable
Dialing in a Google Ads account takes 90 days. Knowing whether advertising is actually a profitable channel for your business takes a full year. Those aren’t industry stall tactics — that’s how long the feedback loops take to run.
Lots of people run ads for six weeks and quit because they can’t stomach it. That is the worst outcome. You pay full price for the warm-up, you walk away right before the part you actually paid for, and you end up with a hard story about “ads don’t work” — when what actually happened is you didn’t stay long enough to find out.
Quitting at week six is objectively worse than never starting.
So the budget question isn’t really “what does the math say.” It’s: how much can you spend every month, for a year, without panic-quitting? That number — whatever it is for you — is your budget. $500 a month for some people. $1,000 for others. $10,000 for others. Commit to it, run it for 365 days, and now you actually know something.
The math should set a floor — don’t spend so little that you can’t generate any data — but the commitment ceiling is the real constraint most people run into first.
If Your Stomachable Number Is “Too Small”
Here’s where people get stuck. They run the math, realize their number doesn’t cover Google Ads CPCs in their market, and figure they’re out of options.
You’re not. There’s an ad product for everybody.
Take a lawyer, for example. Google Ads clicks in legal — DUI, personal injury, family law — run $50 to $150 a click. If those prices make you nauseous, fine. Don’t run Google Ads right now. Run Facebook instead.
Facebook at $5 to $10 a day during business hours: five days a week at $5/day is $25/week, roughly $100 a month. That’s pure awareness — your name, your face, your offer, in front of people in your market. You’re not competing on search; you’re just getting visible. And if you’re a lawyer who can’t spend $100 a month — billboards are ten grand a month. Put it in perspective.
The Facebook play here isn’t a consolation prize. It’s a legitimate strategy. Run Google Ads on your main offer, and run Facebook purely as awareness — so when someone does eventually search for what you do, they’ve already seen your name. It’s a real combination and it works.
The point is: you have options between “I’m going to spend $5,000 a month on Google Ads” and “I guess I just can’t advertise.” The market has ad products at every price point, with very different mechanics and very different audience temperatures. (How Google Ads and Facebook compare for lead generation gets into that tradeoff if you want to think through which fits your situation.)
And If Even That’s Too Much
Then don’t run ads. Genuinely. There are other ways to advertise, and some of them are better fits for where your business is right now — organic search, referrals, outbound, content.
No shame in it. A lot of businesses that “can’t make ads work” are really businesses that weren’t ready for what ads demand: follow-up speed, conversion systems, the stomach to watch spend leave the account before the revenue arrives. If those aren’t in place, ads will just surface those gaps faster, at cost.
Better to admit that now than to run for six weeks, quit, and spend the next year telling people Google Ads doesn’t work — because it does, just not for someone who stops before it does.
The Actual Framework
Here’s how I think about this when a new client asks:
Step 1: Run the math as a floor-check. What does a customer cost to acquire if your conversion rate is decent and your CPCs are market-rate? Is that number sustainable for you? If not, you’ve got a unit-economics problem that no budget level fixes — and you should work on the business before you work on the ads.
Step 2: Pick the amount you can stomach for 12 months. Not the amount you hope will work. Not the amount an agency quote implied. The amount you can actually run, without panic, for a year. If that number is below what the market CPCs require to generate meaningful volume, go to step three.
Step 3: Find the platform that fits your budget. Google Ads, Meta, Local Services Ads (pay-per-lead, different math entirely), YouTube. Somewhere in that range there’s a product that makes sense at your number.
Step 4: Commit. This is the part everyone skips. The commitment is what everything else runs on. 90 days to dial in the account, 12 months to know if it’s a real channel for you. If you’re not in, don’t start — you’ll just waste the ramp-up.
A Word on Minimums You’ll See Quoted
You’ll hear $1,000 a month, $2,000 a month, $5,000 a month — usually from agencies explaining why they won’t take you as a client under a certain number. Those aren’t arbitrary gatekeeping. Below certain spend levels, the ad platform doesn’t gather enough data to optimize well, and the management time-to-spend ratio stops making financial sense for the agency.
That doesn’t mean you can’t run ads below those numbers. It means you might need a leaner management structure, or you might need to run it yourself for a while. What Google Ads management actually costs breaks down how management fees layer on top of ad spend, and where the industry minimums come from.
The spend floor that actually matters is: enough to generate 30–50 conversions a month so Google’s algorithm has data to work with. In many markets, you can do that for $500 to $1,000 a month. In competitive legal or financial services, you can’t — and no amount of optimization changes the CPC floor.
When to Get Help
If you’re trying to figure out whether ads make sense for your business, a one-time audit is usually more useful than months of trial and error on your own. It costs you an hour and surfaces whether the numbers actually work before you commit the spend.
The reason I charge $800 to set up an account rather than a big retainer up front is exactly this: you shouldn’t have to commit thousands of dollars to find out whether the fundamentals are in place. Get the account built right, get the tracking in place, know what you’re measuring — then decide how much to spend.
Tired of guessing whether your ads are working?
We manage Google and Meta ad accounts for businesses spending $500-$10,000/month. $800 setup, $200/month ongoing. You keep your account — we just make it work.