Giving when the month is already tight

Pick your giving number on a calm day, in writing, before the month starts. Pick it in the moment and it becomes whatever's left over, which is usually nothing.

That's most of the problem solved right there. The rest is arithmetic and a few decisions you only have to make once.

Everything below is general education, not personalized financial, tax or legal advice. Your situation has details I don't know.

Percentage or fixed amount

A percentage scales with you. $4,600 net, ten per cent, $460. You get a raise to $5,000 and you're giving $500 without having to think about it again.

A fixed dollar amount doesn't move. That feels stable, and it is, but inflation and raises quietly shrink it in real terms. The $100 a month you set in 2015 is doing less work now.

Fixed amounts do have one honest advantage: irregular income. If you work on commission, tips or contracts, a straight percentage swings hard. A $9,000 month tempts you into a giving level you can't hold in a $3,100 month, and then you feel like a failure in March for something you decided in December.

The middle path works well. Set a floor you can hit in a bad month, then add a percentage of anything above that floor. Floor of $200, plus ten per cent of everything over $4,000. Bad month, you give $200 and you're not a liar. Good month, you give real money.

Gross or net, and then stop relitigating it

People argue about this forever. Gross is the bigger number. Net is what actually lands in the account.

The arithmetic is worth seeing. $6,000 gross and $4,600 net, at ten per cent, is $600 versus $460. Over a year that's roughly $1,680 of difference. Not a rounding error.

Pick one. Write down which one you picked and why. Then leave it alone, because the monthly re-argument costs you more peace than the $140 is worth.

If you're self-employed, your gross includes money that already belongs to the tax authorities and is sitting in your account pretending to be yours. Plenty of people in that situation give on income after setting tax aside, on the grounds that it's the closest equivalent to an employee's take-home. A CPA can tell you what counts as income. Your conscience, or your pastor, handles the rest.

Put it near the top of the list

Order of operations in the budget: giving, then fixed obligations, then savings, then everything flexible.

If giving sits at the bottom, it becomes the shock absorber for every other overspend in the month. You didn't decide to give less. You just bought a transmission and giving was the only line without a due date attached.

There's a real limit to this, and it's not a technicality. Don't give while skipping a prescription, letting the power get cut, or missing rent. That isn't generosity. It's moving the cost onto your kids, your landlord or whoever ends up covering the emergency. Keep the lights on, feed the people in your house, then give.

The tight month, in order

The transmission blew. You're $600 short. Work the list top to bottom and stop when you've found the money.

1. Cut the flexible lines, by name. Groceries down $80 with a leaner week. Eating out to zero, call it $120. Pause two subscriptions, $30. That's $230 without touching anything that matters.
2. Find income. Sell something. Pick up a shift. A Saturday of honest work closes a lot of gaps.
3. Reduce giving on purpose, and write down the number. Give $200 instead of $460. Note it. Decide now whether you'll make it up next quarter or simply let it go. Either is defensible. Drifting is not.
4. Do not borrow to give.

The credit card math, which is not close

Put $200 of giving on a card at around 22 per cent and carry the balance. The charity receives $200. You pay $200 plus interest for as long as it takes you to clear it. Carry it six months and you've spent somewhere north of $210 to deliver $200.

That's a bank getting paid to feel generous. Give by transfer, debit, check or cash. If the money isn't there, the answer this month is a smaller gift, not a financed one.

Build a giving buffer

Treat giving like insurance premiums or the vet bill: a sinking fund.

Keep one to two months of giving in a separate savings bucket. Fund it in the good months. When the bad month arrives, you transfer from the buffer and the commitment survives the volatility without you having to be heroic about it.

This is the single best fix if your income moves around. It costs you nothing except the discipline of not spending a good month.

Giving while you're clearing debt

Name the trade-off honestly, because both sides are real.

Paying down a card at 24 per cent is a guaranteed 24 per cent return. Nothing in your portfolio will beat that. Redirect $400 a month for ten months, kill the card, and your permanent giving capacity goes up for the rest of your life.

The other side: people who stop giving until things settle down often discover that things never settle down. There's always a car, a roof, a medical bill. The habit dies, and habits are harder to restart than to maintain.

The workable compromise is a smaller percentage with a hard end date. Two per cent while the card is alive, back to ten within sixty days of the final payment. Write the date on the fridge. A percentage you actually pay beats a percentage you intend to.

The tax part, briefly

Most filers take the standard deduction, which means their charitable giving reduces their tax bill by exactly nothing. That surprises people who've been told giving is a write-off.

Things worth asking a tax professional about: bunching two years of giving into one calendar year so a single year clears the itemizing threshold, donating appreciated shares instead of cash to avoid the capital gains, and qualified charitable distributions if you're old enough to be taking required distributions from a retirement account.

Ask a CPA or enrolled agent before you try any of it. And don't let the tax tail wag the dog. Nobody has ever gotten rich by giving money away efficiently.

Decide it with your spouse, out loud

Unilateral giving is a marriage problem wearing a halo. One person feels generous, the other finds out from the bank app.

Set the number together once a year, when the budget's in front of both of you. Then give each of you a small discretionary amount you can hand out without a conversation. Twenty-five dollars each a month kills most of the friction, because the urge to help the guy in the parking lot doesn't have to become a negotiation.

Where it goes

For a lot of people the local church gets the first portion and that settles it. Past that, a few questions sort the serious organizations from the well-marketed ones.

• Does the money end up where they say? Can you see it?
• Would this group happily go out of business if the problem were solved?
• Can you visit, volunteer, or talk to someone who's been helped?

Overhead ratio is a weaker signal than people think. A charity that underpays its staff and runs on donated software isn't lean, it's fragile. Better question: what does a dollar do here, and how do they know it worked?

Concentrate. Three organizations at $50 a month does more than fifteen at $10, and you'll actually know what happened to the money.

What usually goes wrong

• Pledging an annual figure based on your best quarter.
• Giving to whoever asked most recently, so the loudest fundraiser wins.
• Giving out of guilt, then resenting it by the fifteenth.
• Counting volunteer hours as a replacement for money you could have given.
• Waiting for the raise. The raise arrives and the lifestyle gets there first.

The person who gives $40 a month for thirty years and never misses will move more money, and become a different kind of person, than the one still waiting for the year he can write a five-figure check. Start at the number you can actually hit in February.