The hourly vs retainer question for a virtual assistant usually gets answered as a preference, as though one is the grown-up option and the other is what you do until you know better. That framing has cost people money in both directions.
They are not better and worse versions of the same thing. They fail differently, they suit different clients, and the right answer changes depending on what the work actually looks like once it starts.
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What each one is, without the marketing
Hourly means you track time and bill it. The client pays for what you spent. If the month is quiet, you earn less. If the month is heavy, you earn more, assuming the client agreed to the hours before you worked them.
Retainer means the client pays a fixed amount for a defined block of work or availability, usually monthly, usually in advance. The amount does not move when the work does, within whatever boundary you set.
The difference people focus on is predictability. What decides the arrangement is who absorbs the variation.
Hourly puts the variation on you
Under hourly, a quiet month is your problem. The client’s costs fall and your income falls with them. You carry the risk of their business being slow, their project stalling, or their decision to pause while they think about something.
This is why hourly feels safe and often is not. It looks fair, because you are paid for exactly what you did. What it hides is that you cannot plan on it. You do not know in November what December pays, and if you have been doing this for a while you know that December is usually quiet.
Hourly also puts a strange incentive between you and the client. The faster you get, the less you earn for the same result. I have watched people slow down without meaning to, and I have watched people speed up and quietly resent it. Neither is a character flaw. It is what happens when the payment structure and the outcome point in opposite directions.
There is one kind of work where hourly is clearly right, and I will come back to it.
A retainer hands that variation to the client
Under a retainer, the client pays the same whether the month was busy or slow. You can plan. They can budget. Both of those are real benefits and they are the reason retainers are usually the better arrangement for established work.
The trade is that you have taken on the risk of a heavy month. If the work doubles and the fee does not, you are now working at half your rate and the arrangement that felt stable is the thing squeezing you.
That is how a retainer fails, and it fails in one particular way: it quietly becomes unlimited. It rarely happens in one step. It happens through a series of small additions, none of which was worth a conversation on its own, until the total is a different job at the old price.
Hourly vs retainer: the question that decides it
Before choosing, ask whether the work is predictable yet.
Not whether it is ongoing. Ongoing and predictable are different things, and confusing them is how people end up on a retainer for work nobody has scoped.
The work is predictable once three things are true. You have done it for a couple of months, you know roughly how long the recurring parts take, and the surprises have stopped arriving weekly. Price that as a retainer and you are pricing something you understand.
If the client has never worked with an assistant, or the scope is still being invented, or every week has brought something nobody anticipated, the work is not predictable yet. Quote it hourly and let the shape emerge, then move to a retainer once you can see it.
That sequence is the practical answer for most people. Start hourly to learn the work, move to retainer once you know it. The mistake is doing it in the other order, or never doing the second half.
I will admit the second half is harder than it sounds. Moving an existing client from hourly to a retainer means opening a conversation about money with someone who is currently happy, and there is no urgent reason to have it, which is exactly why it keeps not happening. I have seen people stay hourly for years on work they could have described in their sleep, not because they thought hourly was better but because the month was busy and the conversation could wait. If that is you, more analysis will not help. Pick a date.
When hourly stays right
Some work never becomes predictable, and forcing it into a retainer is worse than leaving it alone.
Project work with a defined end. Overflow that arrives without a pattern. Clients whose volume genuinely swings, like an accountant in filing season or a shop through a peak. Anything where the honest answer to “how much of this will there be next month” is that nobody knows.
For those, hourly is the correct arrangement rather than a beginner’s one, and dressing it up as a retainer just means one of you is going to be wrong about the number.
What protects each arrangement
Neither structure protects itself. Both need something written down, and the thing that needs writing is different for each.
A retainer needs a boundary. What is included, what is not, and what happens when someone asks for what is not. The boundary does not have to be aggressive. It has to exist, because without it every request is a negotiation you are having alone in your head.
Hourly needs the opposite: agreement before the hours, not after. An estimate the client approved, and a rule about what happens when the work runs past it. The unpaid hour is almost never the hour you worked. It is the hour you worked without asking first.
Both need the money terms decided while everyone is still friendly. When the invoice is due, what happens when it is late, and at what point the work stops. Deciding that in advance is unpleasant for about ten minutes. Deciding it during a late payment is unpleasant for weeks, and by then you are negotiating from the weaker position because you are the one who is owed.
I spent a lot of time on the collections side of this, and the pattern was consistent. The invoices that went bad were almost never the ones from difficult clients. They were the ones where nobody had agreed what late meant.
The version that works for most people
A retainer covering the recurring work, priced from what you have measured, plus an hourly rate for anything outside it, agreed before you start.
This is not a compromise. It puts each type of work under the structure that suits it. The predictable part gets the predictable price. The unpredictable part stays hourly, which is what stops the retainer from silently absorbing it.
It also gives you a normal way to say no. When an out-of-scope request arrives, you answer with a rate rather than a refusal, which is a much easier sentence to say and a much easier one to hear.
Where the terms come from
Whichever you choose, the arrangement is only as good as what you wrote down, and most people write it down after the first thing goes wrong rather than before.
The VA Business Operations Pack is the paperwork for that: the service agreement, the scope boundary, the invoicing and late payment terms, and the wording for the conversations where somebody has asked for more than was agreed.
If you take one thing from this, make it the sequence. Learn the work hourly. Price it as a retainer once you can see its shape. Write down what happens when either one stops matching reality, while it still matches.