Every piece of equipment in your rental inventory will eventually reach a crossroads. The bookings slow down, a newer model starts getting all the attention, or you just have a feeling that the gear has given you everything it is going to give. The question is whether that feeling is backed by numbers or whether you are about to sell a reliable earner because something shinier caught your eye.
Selling too early means you miss out on months or years of rental income from an item that still had life left. Selling too late means watching the resale value crater while booking frequency drops to zero. The sweet spot exists, and you can find it with data you already have or can get in minutes.
The depreciation curve is the foundation
Every sell-versus-keep decision starts with understanding how your equipment loses value over time. If you have not thought about depreciation rates across equipment categories, this is where to begin.
Camera bodies lose value fastest. A typical cinema camera drops 15% to 25% in the first year, 25% to 40% by year two, and 35% to 55% by year three. The curve is steepest at the beginning and gradually flattens out as the resale price approaches a floor.
Lenses depreciate slowly, at roughly 3% to 5% per year for quality glass. A $2,000 lens held for four years might still sell for $1,700.
Accessories fall somewhere in between, with gimbals and monitors depreciating faster (10% to 20% per year) and tripods and grip equipment barely losing value at all.
This matters because the depreciation curve determines how much resale value you are burning through every month you hold an item. A camera body losing $100 per month in resale value needs to earn at least that much in net rental income just to break even on the hold decision. A lens losing $8 per month in value can be profitable even with modest bookings.
Use depreciation tracking to see where each piece of your equipment sits on its curve right now. The estimated current market value compared to what you paid tells you how much value remains and how fast it is disappearing.
Calculating remaining rental income versus resale value
The core of the sell-versus-keep decision is a comparison of two numbers:
If you keep: How much additional net rental income will this item earn over the next 12 months, minus maintenance costs?
If you sell: How much will you get for it today, minus what it will be worth in 12 months if you wait?
Here is a concrete example.
Sony FX3, purchased 22 months ago for $3,900.
Current resale value: approximately $2,400. Estimated resale in 12 months: approximately $2,000. That is $400 in depreciation over the next year.
Current booking rate: 5 days per month at an effective rate of $140 per day after Sharegrid fees and multi-day discounts. That is $700 per month, or $8,400 over 12 months.
The math is clear. You would earn $8,400 in rental income while losing $400 in resale value. Net gain from keeping: $8,000. This camera should stay in your inventory.
Now consider a different scenario.
Blackmagic Pocket 6K, purchased 30 months ago for $2,000.
Current resale value: approximately $900. Estimated resale in 12 months: approximately $700. That is $200 in depreciation over the next year.
Current booking rate: 1 day per month at an effective rate of $60 per day. That is $60 per month, or $720 over 12 months.
Net gain from keeping: $720 minus $200 = $520. That is positive but barely. And this assumes the booking rate holds steady, which is unlikely for a camera with declining demand. If bookings drop to 0.5 days per month, the net gain drops to $160, and you have tied up $900 in capital for a year to earn it.
The better move is to sell now on a used gear marketplace like MPB or KEH, pocket the $900, and put that capital toward something that books more frequently. This is exactly the kind of decision that payback tracking helps you make by showing how far along each item is toward paying for itself.
Five signs it is time to sell
1. Booking frequency is declining
This is the strongest sell signal. Pull up your booking history for the past 6 to 12 months and look at the trend. Not the total revenue, the number of individual bookings per month.
A camera that booked 8 days per month a year ago and now books 3 days per month is on a downward trajectory. Even if it still earns money, the trend tells you where it is heading. Markets do not reverse these declines for individual items. When renters stop requesting a specific piece of gear, they have moved on to something else.
2. A newer model is dominating your category
Product launches are the single biggest driver of rental demand shifts. When Sony releases the FX3 II, every FX3 rental listing competes against the newer version. Some renters will specifically request the older model (budget-conscious productions, people who know the camera), but over time, the new model absorbs most of the demand.
Monitor Sharegrid listings in your category. If you see multiple listings for the newer version and those listings have more recent reviews than yours, the market has shifted. The longer you wait, the more the resale value of your older model drops.
3. Maintenance costs are rising
Production equipment wears out. Cameras develop sensor issues, lenses get soft, gimbals lose calibration, and cables fray. When maintenance costs start eating into your net rental income, the math changes.
If you are spending $200 per quarter on maintenance for a camera that earns $600 per quarter in net rental income, 33% of your earnings are going back into keeping the item operational. That is a sign the item has entered its end-of-life phase as a rental asset. Sell it before the next repair bill.
4. The item has fully paid for itself
Once an item crosses 100% payback, every rental day is pure profit. But it also means you have zero financial exposure. You can sell the item and the entire sale price is gain. There is no sunk cost to recover.
An item at 120% payback with declining bookings and a resale value of $1,500 is handing you $1,500 in free capital when you sell it. That capital can be deployed into something earning at a higher rate.
5. Your capital is better deployed elsewhere
This is the opportunity cost argument. Every dollar tied up in a slow-earning piece of equipment is a dollar you cannot invest in something with better returns.
If your aging Canon C70 has a resale value of $3,000 and earns $200 per month in net rental income, that is a 6.7% monthly return on the capital. Not bad. But if a new Sony FX3 at $3,900 would earn $700 per month in your market, that is a 17.9% monthly return. The $3,000 from selling the C70 plus $900 out of pocket gets you into a much higher-earning asset. Knowing what to buy, keep, and sell is about deploying capital where it works hardest.
Five signs you should keep renting
1. The item still books consistently
Consistency matters more than volume. An item that reliably books 4 to 6 days every month is doing its job. You can plan around it, it contributes predictable income, and it does not require your attention. Do not sell a reliable earner because the daily rate seems modest. Reliable modest earners are the backbone of a healthy rental inventory.
2. It has not hit 100% payback yet
Selling before payback means realizing a loss. The net rental income plus the resale value does not cover the original purchase price. Sometimes this is the right move, specifically when an item is depreciating faster than it is earning. But in most cases, holding through to payback and then evaluating is the better strategy.
3. Depreciation has flattened
Camera bodies that are four or five years old have usually hit their depreciation floor. The resale price is not going to drop much further. At this point, every booking is nearly pure net gain because you are not losing meaningful value by holding. A five-year-old camera that still books 2 to 3 days per month at $80 per day is earning $160 to $240 per month on an asset that barely depreciates. That is excellent capital efficiency.
4. Maintenance costs are low
Some equipment just runs. A well-built set of cinema primes might need a cleaning once a year and nothing else. A quality tripod and fluid head system runs for a decade without issues. If an item costs almost nothing to maintain, the hurdle for keeping it is very low. Even modest bookings are worthwhile because almost all of the revenue drops to profit.
5. It complements high-demand items
Some pieces do not book well on their own but book frequently as part of a package. A wireless follow focus that only books standalone once a month might book 8 times a month when bundled with a popular camera body. Selling the follow focus would reduce your camera kit's appeal and potentially lower bookings for the whole package.
Think about each item not in isolation but as part of your overall listing strategy.
Real examples with the numbers
Example 1: Keep. Canon EF 24-70mm f/2.8L II.
Purchased 3 years ago for $1,800. Current resale value: $1,500. Booking rate: 4 days per month at $45 effective rate. Monthly net income: $180. Annual depreciation: roughly $75 (4% per year). Payback so far: 116%. Annual net gain from holding: ($180 times 12) minus $75 = $2,085.
The lens has paid for itself, still books steadily, barely depreciates, and generates over $2,000 per year in depreciation-adjusted income. This is a hold all day.
Example 2: Sell. DJI RS 3 Pro gimbal.
Purchased 18 months ago for $700. Current resale value: $350. Booking rate: 1 day per month at $35 effective rate. Monthly net income: $35. Annual depreciation: roughly $100 (gimbals depreciate 20% or more per year). Payback so far: 90%. Annual net gain from holding: ($35 times 12) minus $100 = $320.
The gimbal has almost paid for itself, but the annual net gain of $320 on a $350 asset means you are tying up capital for a 91% annual return, which sounds great in percentage terms but is only $320 in absolute dollars. If that $350 could contribute to buying a lens that earns $180 per month, the redeployment makes more sense.
Example 3: Sell now, do not wait. Canon C200 camera body.
Purchased 36 months ago for $5,500. Current resale value: $1,800. Booking rate: 0.5 days per month (one booking every two months). Monthly net income: $50. Annual depreciation: roughly $300. Payback so far: 68%. Annual net gain from holding: ($50 times 12) minus $300 = $300.
This camera has not paid for itself and probably never will. The booking rate is near zero. The resale value is falling. Sell now, recover the $1,800, accept the $1,700 loss, and deploy that capital elsewhere. Waiting another year gets you $300 in net gain while the resale price drops another $300, leaving you exactly where you started but twelve months older.
Making the decision systematic
The sell-versus-keep decision should not be emotional. It should happen on a schedule. Every quarter, review each item in your inventory against these criteria. Look at booking trends over the trailing 6 months. Check where each item stands on payback and depreciation. Compare the annual net gain from holding against the resale value and what you could earn by redeploying that capital.
Rental IQ gives you the data to make these decisions without building spreadsheets. Payback percentages, booking trends, and depreciation estimates are all in one place for every item in your inventory. When the numbers say sell, sell. When the numbers say hold, hold. And when the numbers are close, lean toward holding, because switching costs and the friction of selling eat into the theoretical gains of redeployment.
Your gear is an investment portfolio. Treat it like one. The owners who consistently outperform are not the ones with the newest equipment. They are the ones who know exactly when to hold and when to let go.
