Sam and Rob Fatzinger, second and third from right, of Bowie, Md., have 13 children, including, from left, Barbara, Robert, Kolbe, Alex, Mary, Cecelia and Dominic. (April Greer/For The Washington Post)

Sam Fatzinger prowls the aisles of an Aldi grocery store with an engineer’s precision. Workers greet her, mostly by name.

She puts several trays of chicken into a huge cart. Then it’s on to fresh blueberries for $1.79 a pint, in February. And she recalls the time the no-frills store had a sale on potatoes: 10 pounds for 99 cents. She bought 60 pounds. Her husband loves them.

To get these best buys, “it’s just watching and waiting and knowing,” Sam says.“Every cent counts.”

At the cashier, her groceries fill every inch of the conveyor belt. My silent guess: $250 in all. The bill: $127, half of my estimate.

Very impressive. But not as impressive as this:

Rob and Sam Fatzinger, lifelong residents of Bowie, Md., lead a single-income family in one of the country’s most expensive regions. Rob’s income never topped $50,000 until he was 40; he’s now 51 and earns just north of $100,000 as a software tester.

They have 13 children. Which means they require things like a seven-bedroom house and a 15-passenger van. Four children have graduated from college, three are undergrads and six are on the runway.

Yet they paid off their mortgage early four years ago. They have no debt — never have, besides mortgages. And Rob is on track to retire by 62.

This family gets the gold medal for being frugal. This family is the Einstein of economical.

These days, frugality is not about clipping coupons. It’s about rethinking your finances, and maybe your life.

Rob’s philosophy: “Spend money on what makes you truly happy and on what you enjoy. ... The thing that people need to understand is that we don’t feel deprived or poor. ... We pick and choose carefully.”

The Fatzingers are getting it done.

Could you?

A Fatzinger family portrait with, from left, Caleb, Kolbe, Alex, Mary, Joey, Cecilia, Barbara, Dominic, Lizzie, Robert, Rob, Eric, Sam and Ray. Not pictured: Joshua. (April Greer/For The Washington Post)

Frugality is hardly new. In 1789, George Washington wrote to Marquis de Lafayette, the French military officer who fought for the American Revolution: “Nothing but harmony, honesty, industry and frugality are necessary to make us a great and happy people.” And we were a frugal people well into the 20th century. Then came the era of instant credit, rampant consumerism and record personal bankruptcies.

Recently, frugality has gotten a boost thanks to hundreds of personal-finance bloggers, and no thanks at all to the Great Recession of 2007-2009. Many focus on FIRE, an acronym for financial independence/retire early.

Aspirants often strive to save at least 25 percent of their take-home pay over the years, or even twice that — or more — to feel financially secure or to pursue a new career. Others yearn to quit their jobs for the long haul, even in their 30s.

One leading blogger grew up on food stamps. Others learned about money from their parents, for good or ill. The best are innovative, funny and surprisingly philosophical as they chart a course for change and places unknown.

They’re about ideas and possibilities, not suffering. And millions are listening. Until a couple of years ago, Rob Fatzinger had a blog called Sardonic Catholic Dad, focusing on family, faith and frugality. Two of his hits: “College on the Cheap — How the Sardonic Family Does It” and “How to Retire Early With 13 Kids,” which he wrote as a guest post on the FIRE site Mad Fientist.

Frugalism is often about math, determinationand thinking a bit differently. A few key principles: How much you save, as a percentage of your paycheck, will foretell when you’ll be able to build your own business or retire. Small financial changes can make a big impact. And it’s not really about your income; it’s about your savings, says Pete Adeney, a lapsed engineer from outside Boulder, Colo., who created the popular Mr. Money Mustache blog.

And then there’s the “miracle” of compounding interest, the gift that keeps giving as your investment’s interest spawns its own interest, time and again.

Dinnertime can be hectic for the Fatzingers, although they've learned shortcuts to speed the process through sharing and passing silverware. (April Greer/For The Washington Post)

The Fatzingers would never claim to be financial magicians. But to outsiders, it might look that way.

After marrying 27 years ago, Sam and Rob started a small Christian bookstore in Crofton, Md., and soon had a daughter. Rob said the couple never earned more than $36,000 a year in the business. Still, they saved 10 to 15 percent of their earnings. By the time they shuttered the store in 2000, they had seven kids.

About 10 years ago, Rob got the job testing software. Earnings of $40,000 gave way to $60,000 and are now about $110,000, counting a few thousand from mowing neighbors’ lawns and other tasks.

Back in 2000, they bought a five-bedroom house out of foreclosure and later added three bedrooms. Nine children, including the youngest, who is 4, live there now.

The good news: The home cost $150,000. The Fatzingers paid down $50,000, saving interest on the 15-year mortgage.

The bad news: Sam said their priest, visiting to bless the new home, “walked in and said: ‘Should I do an exorcism on this house?’ ” The place was in serious disrepair.

“Relatives gutted it and made it livable,” Sam said. “Youth groups were over here, ripping up carpet, taking down walls.” Someone gave them a wood stove. A relative gifted them a used couch. Later, another couch was left on a curb for anyone to take. Score.

Years later, they enlarged the kitchen, using two zero-percent finance offers good for 12 months. Eleven months later, they paid off the loan, without paying any interest. The project cost $28,000, with family members doing much of the demolition, painting and decorating.

Now they have two refrigerators, two stoves, two dishwashers and a welcoming, comfortable home. (Even the clothes washer is a champ. Sam estimates that the family cleans 42 loads a week, but never on Sundays. The only children who don’t do the wash are the 4- and 6-year-olds.)

Since the mortgage was paid off in 2012, Rob and Sam have turbo-charged their savings rate, now investing about $3,000 a month. Even so, they don’t go without. Sam has a $10 monthly gym membership, and Rob and Sam go out for lunch on the 20th of each month, maybe at Red Robin Gourmet Burgers and Brews in Bowie, marking the day of the month they got married.

Occasionally, Sam and Rob are annoyed by strangers at the grocery store. “People still say, “Oh my God, you have so many kids!” said Sam, a devout Catholic, as is Rob. “I have this ‘Don’t mess with me’ reaction. I’m not your typical, quiet, passive woman.”

Rob, 51, is soft-spoken, a work-from-home dad and a former “American Idol” fan. A few years back, he finished a 50-mile trail run — and kept going to 54.

Sam, who is 48, home-schools the children through high school and is certified to do so. The kids also get outside tutoring. Her nonacademic lessons extend to the rules and responsibility of money.

“My kids all get jobs as soon as they’re old enough,” she says, and they “learn to discern between needs and wants. They pay for their cellphones, they pay for college, they pay for their own gas.” Allowances? Nope.

Daughter Barbara, 20, a rising senior at the University of Maryland Baltimore County, started babysitting at 11. She got her first “real job” at Rita’s Italian Ice. Babysitting, she noted, “paid way more than Rita’s.”

When she was 15, Barbara bought a 1994 Ford Escort with 30,000 miles for $2,600 from her savings. “It sat in the driveway until I got my driver’s permit,” she said. Five years later, “I still drive it.”

The family shops at sales or secondhand stores and checks out the Freecycle Network, a site for giving away belongings.

Friends and strangers also chip in. “We always have someone dropping off a bike,” Sam said. “We would get things and not even know where they came from.”

Someone stuck an anonymous $500 gift card on the Fatzingers’ front door. And a pair of size 3 white shoes for church wound up on the doorstep for a young daughter who could use them.

“Bowie just does that,” Sam said. A friend from church gave them a used car, and Sam’s sister gave her a used red Chevrolet Suburban. And later, an older white Suburban.

Fine. Except this is America. Surely the kids are seething cauldrons of Nike-deprived resentment.

Or maybe not. “I always had a ton of clothes,” Barbara said. “I would go with Grandma and buy any cute clothes I wanted.”

Older brother Caleb: “I can see how some people would think ... we might have been deprived. It was never like that.” He played soccer at a small Christian school, was a counselor at a summer camp and swam at a community pool. The kids had cable TV and high-speed Internet. In community college, Caleb said, he “knew I didn’t have what some other kids had, but it was never out of control.”

As for the givers: Sam’s sister, Joan Salvagno, who is 11 years older than Sam in a family of nine, said her sister’s family “needed the car more than we did. ... You don’t really think of them as gifts. ... We’ve gotten more than we’ve given.”

The children head down the driveway for a family bike ride. (April Greer/For The Washington Post)

These days, even the childless can be terrified of college costs, so just imagine having 13 kids. But the Fatzingers have a strategy, and it’s working. The plan: Start in community college, don’t expect a handout from Mom and Dad, and graduate debt-free.

So far, Alexandria, the oldest at 26, graduated at 21 with a master’s degree in social work. Joshua, 25, graduated from the University of Maryland with a degree in kinesiology and became a missionary.

Caleb, 23, is in the last year of a doctoral program in physical therapy at the University of Maryland at Baltimore. And Lizzie, 21, graduated in May from the University of Maryland with a math major, while also cleaning houses and tutoring. All four graduated from college debt-free.

All five oldest Fatzingers have gone first to Anne Arundel Community College.

In Barbara’s first semester, her tuition, textbooks and gas money were covered by scholarships and other aid. In her second semester, she spent “probably $500” in tuition. The next year, she paid $700 to $1,000 per semester. After two years, she had paid about $2,500 at most. It came from savings and her job in a child-care center at a gym.

In September, Barbara started at UMBC, a public university with higher expenses. Her first year there cost about $15,000, after receiving a $5,800 scholarship based on grades and financial need. Money was tight. Again, she paid with her savings, which included money from a grandparent, who gives each child a one-time gift of $5,000 for college. Barbara used some of the gift money to stay in school, but she’s saving most of it.

She will soon begin her senior year at UMBC. She has a $7,500 stipend for tuition and five small scholarships “that will fill the holes.” In return for the stipend, she’ll work for a state child-welfare program.

Barbara has decided to live at home this year, which means she’ll be commuting and “won’t be spending at all,” she said in a text message. “And I WILL graduate debt-free.”

Next year, she’ll follow in oldest sister Alex’s footsteps, pursuing her master’s degree in social work at another school, which could take one or two years. A Maryland program will pay most of her tuition, and in exchange, she’ll work for a child-welfare agency for two or three years after she graduates.

In total, roughly speaking, Barbara has paid about $17,500 out of pocket for tuition, books, supplies and fees for four years of college.

The Washington Post's Jonnelle Marte gives helpful tips to avoid frequent mistakes made by people while preparing for retirement. (Ashleigh Joplin,Jonnelle Marte/The Washington Post)

I asked if she had paid for all her expenses in her first year at UMBC. The $15,000, she said, “was all of my money that I’ve been saving since I was 8 years old!”

But even the Fatzingers can’t outrun the college-cost steamroller.

Caleb was fine in community college, where he paid “essentially nothing,” in part because of his good grades and aid. And he graduated debt-free at Towson University, a public state school, where he worked in the admissions office.

But when he began the doctoral program in physical therapy two years ago, he had to take out a loan. With aid more scarce in grad school, he said he’ll end up owing almost $90,000.

“I think about it a good amount,” said Caleb, who started working as a physical therapy technician at 18. “I try not to worry too much.” He hopes to pay off the loan in 10 years.

He has one more year to go. He works at the school gym some days at 5:30 a.m. and slips into class at 9:30. “I think I’ve done the best I can,” he says.

Barbara goofs off with Cecilia and Mary. The Fatzingers have a seven-bedroom house. (April Greer/For The Washington Post)

The Fatzingers’ recent challenge: Joshua, the oldest son, is getting married in November — in Arizona. Could they all get there?

There was considerable concern. With 13 kids, the need to be frugal never takes a vacation.

At the end, they got three plane tickets for free, using air miles. Then they bit the bullet and bought 10. They’ll all be at the wedding.

My advice: Never bet against the Fatzingers.

Erica Johnston, an editor at The Post, never knew she came from a “small” family of nine until she met the Fatzingers.

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