The full payment schedule gets signed before the first hour of work
By the end of this lesson, you'll have the entire payment schedule, installments, amounts, and what triggers each one, written into the estimate and signed before you touch the first material.
By Yodai · Published September 6, 2026 · Updated October 12, 2026
Breaking up a job's payment into stages, based on what you're risking at each phase, doesn't help if that schedule never gets signed before you start. You send the bathroom remodel estimate, the client says yes, and you get to work. Ten days in, with the old tile already ripped out and the new fixtures sitting in storage, you text: time for the second payment. And right then, at the worst possible moment to argue about it, comes the line: "wait, when did we agree on that?"
You never agreed on it. Or you talked about it briefly, on a call, and each of you walked away with the version that suited you best. That gap is what's going to cost you money, and it'll cost you exactly when you have the least room to maneuver: with the job underway, the materials already bought, and no desire to stop halfway through.
The question isn't how much to charge at each stage, you already decided that based on what you'd set for the previous stage. The question is when the whole schedule gets agreed on: whether you sign it all before you pick up a single tool, or work it out payment by payment as each one comes due.
Get it signed while they're excited, not once they're not
When you negotiate payment stage by stage, every payment becomes a new conversation. And every new conversation is a chance for the client to ask for a discount, say "that was never really clear," or wait a few days before responding. With the job on hold, those days belong to them, not you. And if the payment schedule was never put in writing, the law won't bail you out: Spain's Civil Code states that, "absent an agreement or custom to the contrary, the price of the work must be paid upon delivery" (Article 1599). Without an agreement, the default rule is you get paid at the end.
Sign the full payment schedule before you touch the first material, using the same installments you already set for each stage of the job. That signature isn't paperwork, it's the moment when the client is most eager for you to get started. They just made the decision, they're excited about the new bathroom, they want to see it done. That's the moment to ask them to sign off on when and how much they'll pay at each step, not three weeks later, once the excitement has worn off and all they see is a half-finished job in their house.
This doesn't change what you already know from the previous lesson about billing for the work completed, not for the calendar date. It only changes when that breakdown gets put in writing: upfront, and just once.
by the time it's payment time, the materials are already installed, and if everything grinds to a halt, you're the one who loses, not them
What goes into the schedule, stage by stage
The schedule isn't a list of dates on a calendar. It's a list of payment stages, each with its amount and the specific milestone that triggers it. A milestone you can verify just by looking at the job site, not a date circled on a calendar that can shift for a thousand reasons outside your control.
In home remodeling, charging in stages is standard practice: according to the Community of Madrid, companies "usually ask for several payments: one upfront (30 to 40 percent to cover travel costs or materials) and a final payment at completion," and sometimes a third one at the halfway point. And if your client is an individual homeowner, explaining how payment will work before they sign isn't just good sense: Spain's consumer protection law requires you to tell them, before they're bound by the contract, about "the payment, delivery, and performance procedures" (Article 60).
With the schedule signed before you start, every payment stops being a conversation and becomes routine: the milestone happens, you send the invoice, you get paid. What happens if a payment isn't made on time is the next lesson.
- The full payment schedule gets signed before you touch the first material
- Each payment has its amount and its trigger written into the estimate itself
- You ask for the signature when the client is most excited, not halfway through the job
- Dates no longer work as triggers, only verifiable milestones do
Test yourself
Answer before opening each one. If one gives you trouble, go back to the section that explains it.
1. A client tells you: "Sign whatever you want, but I'd rather pay as I see things moving along." What do you say back?
That the schedule doesn't change what they see: each payment stage is still tied to a checkable milestone, like the tile work finished or the bathroom delivered and tested, so they're already paying as the job moves forward. The only difference is that the amount and the milestone get written down before you start, instead of being negotiated every time a payment is due.
2. You already closed a bathroom job with a signed schedule, but when the second payment comes due, the client says they don't remember signing that. What do you do?
Show them the signed estimate with the payment schedule built in. You're not defending your memory, you're defending a document. That's why the schedule belongs in the same document the client signs when they accept the estimate, not in a separate email or a text thread that gets lost or reinterpreted. It doesn't have to be on paper: if you send the estimate by email or text and they accept it the same way, Spain's e-commerce law says the electronic record of that contract "shall be admissible in court as documentary evidence" (Article 24). What matters is that the schedule is part of the estimate they accept, not a stray message.
3. You're about to start a three-month remodel, and locking into a fixed schedule from day one makes you nervous. Do you still sign the full schedule, or leave a stage open?
You still sign the complete schedule either way: a longer job just has more phases, and each phase has its own stage tied to a milestone. Leaving one stage open-ended is exactly the gap a client will use to renegotiate halfway through. If you're worried the scope might change, add a change-order clause for price adjustments, not an undefined stage, and put every change in writing, signed, before you make it. The Community of Madrid asks for something similar in home renovations for individual homeowners when hidden issues turn up after the estimate: put them in writing along with the added cost, in a document that "must be signed by both parties before starting the repair."
The schedule is signed. The next question is what you do on the day one of those payments doesn't come through: whether the job can move on to the next stage without that money, or not.
Sources
- Royal Decree of July 24, 1889, publishing the Civil Code, Article 1599. Spain's Official State Gazette (BOE), consolidated text, last update published January 3, 2025.
- Royal Legislative Decree 1/2007, of November 16, approving the consolidated text of the General Law for the Protection of Consumers and Users and other complementary laws, Article 60. Spain's Official State Gazette (BOE), consolidated text, last update published February 28, 2026.
- Law 34/2002, of July 11, on information society services and electronic commerce, Article 24. Spain's Official State Gazette (BOE), consolidated text, last update published January 23, 2025.
- Home Remodeling. Community of Madrid (Consumer Affairs), last updated September 16, 2026.